kernel/acpi: Fix a reference to an uninitialized ptr.
[dragonfly.git] / sys / dev / acpica5 / acpi.c
CommitLineData
5ed44076 1/*-
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2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.kfreebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.kfreebsd.org>
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4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
32af04f7
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28 *
29 * $FreeBSD: src/sys/dev/acpica/acpi.c,v 1.243.2.4.4.1 2009/04/15 03:14:26 kensmith Exp $
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30 */
31
32#include "opt_acpi.h"
33#include <sys/param.h>
34#include <sys/kernel.h>
35#include <sys/proc.h>
36#include <sys/fcntl.h>
37#include <sys/malloc.h>
10f97674 38#include <sys/module.h>
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39#include <sys/bus.h>
40#include <sys/conf.h>
10f97674 41#include <sys/ioccom.h>
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42#include <sys/reboot.h>
43#include <sys/sysctl.h>
44#include <sys/ctype.h>
45#include <sys/linker.h>
46#include <sys/power.h>
47#include <sys/sbuf.h>
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48#include <sys/device.h>
49#include <sys/spinlock.h>
50#include <sys/spinlock2.h>
5ed44076 51
10f97674 52#include <sys/rman.h>
5ed44076 53#include <bus/isa/isavar.h>
10f97674 54#include <bus/isa/pnpvar.h>
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55
56#include "acpi.h"
57#include <dev/acpica5/acpivar.h>
58#include <dev/acpica5/acpiio.h>
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59#include "achware.h"
60#include "acnamesp.h"
61#include "acglobal.h"
62
63#include "pci_if.h"
4ea06a72 64#include <bus/pci/pci_cfgreg.h>
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65#include <bus/pci/pcivar.h>
66#include <bus/pci/pci_private.h>
67
68#include <vm/vm_param.h>
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69
70MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
71
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72#define GIANT_REQUIRED
73#define mtx_lock(a)
74#define mtx_unlock(a)
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75/* Hooks for the ACPI CA debugging infrastructure */
76#define _COMPONENT ACPI_BUS
77ACPI_MODULE_NAME("ACPI")
78
79static d_open_t acpiopen;
80static d_close_t acpiclose;
81static d_ioctl_t acpiioctl;
82
fef8985e 83static struct dev_ops acpi_ops = {
88abd8b5 84 { "acpi", 0, 0 },
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85 .d_open = acpiopen,
86 .d_close = acpiclose,
87 .d_ioctl = acpiioctl
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88};
89
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90/* Global mutex for locking access to the ACPI subsystem. */
91struct lock acpi_lock;
92/* Bitmap of device quirks. */
93int acpi_quirks;
f9d8cd12 94
5ed44076 95static int acpi_modevent(struct module *mod, int event, void *junk);
10f97674 96static void acpi_identify(driver_t *driver, device_t parent);
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97static int acpi_probe(device_t dev);
98static int acpi_attach(device_t dev);
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99static int acpi_suspend(device_t dev);
100static int acpi_resume(device_t dev);
49e48b8a 101static int acpi_shutdown(device_t dev);
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102static device_t acpi_add_child(device_t bus, device_t parent, int order, const char *name,
103 int unit);
5ed44076 104static int acpi_print_child(device_t bus, device_t child);
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105static void acpi_probe_nomatch(device_t bus, device_t child);
106static void acpi_driver_added(device_t dev, driver_t *driver);
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107static int acpi_read_ivar(device_t dev, device_t child, int index,
108 uintptr_t *result);
109static int acpi_write_ivar(device_t dev, device_t child, int index,
110 uintptr_t value);
c8b4f0e6 111static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
10f97674 112static int acpi_sysres_alloc(device_t dev);
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113static struct resource *acpi_alloc_resource(device_t bus, device_t child,
114 int type, int *rid, u_long start, u_long end,
4f7fe8c7 115 u_long count, u_int flags, int cpuid);
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116static int acpi_release_resource(device_t bus, device_t child, int type,
117 int rid, struct resource *r);
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118static void acpi_delete_resource(device_t bus, device_t child, int type,
119 int rid);
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120static uint32_t acpi_isa_get_logicalid(device_t dev);
121static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
676159d4 122static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
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123static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
124 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
125 ACPI_BUFFER *ret);
126static int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
127 int *dstate);
128static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
129 void *context, void **retval);
130static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
131 int max_depth, acpi_scan_cb_t user_fn, void *arg);
132static int acpi_set_powerstate_method(device_t bus, device_t child,
133 int state);
5ed44076 134static int acpi_isa_pnp_probe(device_t bus, device_t child,
10f97674 135 struct isa_pnp_id *ids);
5ed44076 136static void acpi_probe_children(device_t bus);
10f97674 137static void acpi_probe_order(ACPI_HANDLE handle, int *order);
5ed44076 138static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
10f97674 139 void *context, void **status);
10f97674 140static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
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141static void acpi_shutdown_final(void *arg, int howto);
142static void acpi_enable_fixed_events(struct acpi_softc *sc);
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143static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
144static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
145static int acpi_wake_prep_walk(int sstate);
49e48b8a 146static int acpi_wake_sysctl_walk(device_t dev);
b955fe7e 147#ifdef notyet
49e48b8a 148static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
b955fe7e 149#endif
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150static void acpi_system_eventhandler_sleep(void *arg, int state);
151static void acpi_system_eventhandler_wakeup(void *arg, int state);
152static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
153static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
154static int acpi_pm_func(u_long cmd, void *arg, ...);
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155static int acpi_child_location_str_method(device_t acdev, device_t child,
156 char *buf, size_t buflen);
157static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
158 char *buf, size_t buflen);
4ea06a72 159static void acpi_enable_pcie(void);
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160
161static device_method_t acpi_methods[] = {
162 /* Device interface */
163 DEVMETHOD(device_identify, acpi_identify),
164 DEVMETHOD(device_probe, acpi_probe),
165 DEVMETHOD(device_attach, acpi_attach),
49e48b8a 166 DEVMETHOD(device_shutdown, acpi_shutdown),
5ed44076 167 DEVMETHOD(device_detach, bus_generic_detach),
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168 DEVMETHOD(device_suspend, acpi_suspend),
169 DEVMETHOD(device_resume, acpi_resume),
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170
171 /* Bus interface */
172 DEVMETHOD(bus_add_child, acpi_add_child),
173 DEVMETHOD(bus_print_child, acpi_print_child),
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174 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
175 DEVMETHOD(bus_driver_added, acpi_driver_added),
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176 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
177 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
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178 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
179 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
180 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
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181 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
182 DEVMETHOD(bus_release_resource, acpi_release_resource),
10f97674 183 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
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184 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
185 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
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186 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
187 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
188 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
189 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
190
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191 /* ACPI bus */
192 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
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193 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
194 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
195 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
196
197 /* PCI emulation */
198 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method),
676159d4 199
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200 /* ISA emulation */
201 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
202
203 {0, 0}
204};
205
206static driver_t acpi_driver = {
207 "acpi",
208 acpi_methods,
209 sizeof(struct acpi_softc),
210};
211
212static devclass_t acpi_devclass;
aa2b9d05 213DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, NULL);
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214MODULE_VERSION(acpi, 1);
215
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216ACPI_SERIAL_DECL(acpi, "ACPI serializer")
217
218/* Local pools for managing system resources for ACPI child devices. */
219static struct rman acpi_rman_io, acpi_rman_mem;
220
221#define ACPI_MINIMUM_AWAKETIME 5
222
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223static const char* sleep_state_names[] = {
224 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
5ed44076 225
10f97674 226SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
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227static char acpi_ca_version[12];
228SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
229 acpi_ca_version, 0, "Version of Intel ACPI-CA");
230
231/*
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232 * Allow override of whether methods execute in parallel or not.
233 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
234 * errors for AML that really can't handle parallel method execution.
235 * It is off by default since this breaks recursive methods and
236 * some IBMs use such code.
237 */
238static int acpi_serialize_methods;
239TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
240
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241/* Power devices off and on in suspend and resume. XXX Remove once tested. */
242static int acpi_do_powerstate = 1;
243TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
244SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
245 &acpi_do_powerstate, 1, "Turn off devices when suspending.");
246
247/* Allow users to override quirks. */
248TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
249
250static int acpi_susp_bounce;
251SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
252 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
253
f9d8cd12 254/*
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255 * ACPI can only be loaded as a module by the loader; activating it after
256 * system bootstrap time is not useful, and can be fatal to the system.
257 * It also cannot be unloaded, since the entire system bus heirarchy hangs
258 * off it.
259 */
260static int
261acpi_modevent(struct module *mod, int event, void *junk)
262{
10f97674 263 switch (event) {
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264 case MOD_LOAD:
265 if (!cold) {
e3869ec7 266 kprintf("The ACPI driver cannot be loaded after boot.\n");
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267 return (EPERM);
268 }
269 break;
270 case MOD_UNLOAD:
271 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
272 return (EBUSY);
273 break;
274 default:
275 break;
276 }
277 return (0);
278}
279
280/*
281 * Perform early initialization.
282 */
283ACPI_STATUS
284acpi_Startup(void)
285{
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286 static int started = 0;
287 ACPI_STATUS status;
288 int val;
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289
290 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
291
10f97674 292 /* Only run the startup code once. The MADT driver also calls this. */
5ed44076 293 if (started)
10f97674 294 return_VALUE (AE_OK);
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295 started = 1;
296
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297 /*
298 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
299 * if more tables exist.
300 */
301 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
302 kprintf("ACPI: Table initialisation failed: %s\n",
303 AcpiFormatException(status));
304 return_VALUE (status);
5ed44076 305 }
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306
307 /* Set up any quirks we have for this system. */
308#ifdef notyet
309 if (acpi_quirks == ACPI_Q_OK)
310 acpi_table_quirks(&acpi_quirks);
5ed44076 311#endif
f9d8cd12 312
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313 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
314 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
315 acpi_quirks &= ~ACPI_Q_BROKEN;
316 if (acpi_quirks & ACPI_Q_BROKEN) {
317 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
318 status = AE_SUPPORT;
319 }
f9d8cd12 320
10f97674 321 return_VALUE (status);
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322}
323
324/*
325 * Detect ACPI, perform early initialisation
326 */
10f97674 327static void
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328acpi_identify(driver_t *driver, device_t parent)
329{
330 device_t child;
331
332 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
333
334 if (!cold)
10f97674 335 return_VOID;
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336
337 /* Check that we haven't been disabled with a hint. */
338 if (resource_disabled("acpi", 0))
10f97674 339 return_VOID;
5ed44076 340
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341 /* Make sure we're not being doubly invoked. */
342 if (device_find_child(parent, "acpi", 0) != NULL)
10f97674 343 return_VOID;
5ed44076 344
10f97674 345 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
5ed44076 346
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347 /* Initialize root tables. */
348 if (ACPI_FAILURE(acpi_Startup())) {
349 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
350 return_VOID;
351 }
f9d8cd12 352
5ed44076 353 /* Attach the actual ACPI device. */
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354 if ((child = BUS_ADD_CHILD(parent, parent, 10, "acpi", 0)) == NULL) {
355 device_printf(parent, "device_identify failed\n");
356 return_VOID;
5ed44076 357 }
e1eeedd0
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358}
359
360/*
10f97674 361 * Fetch some descriptive data from ACPI to put in our attach message.
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362 */
363static int
364acpi_probe(device_t dev)
365{
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366 ACPI_TABLE_RSDP *rsdp;
367 ACPI_TABLE_HEADER *rsdt;
368 ACPI_PHYSICAL_ADDRESS paddr;
369 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
5ed44076 370 struct sbuf sb;
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371
372 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
373
374 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
375 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
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376 device_printf(dev, "probe failed, other PM system enabled.\n");
377 return_VALUE (ENXIO);
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378 }
379
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380 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
381 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
382 return_VALUE (ENXIO);
383 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
384 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
385 else
386 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
387 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
e1eeedd0 388
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389 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
390 return_VALUE (ENXIO);
e1eeedd0 391 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
10f97674 392 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
e1eeedd0
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393 sbuf_trim(&sb);
394 sbuf_putc(&sb, ' ');
10f97674 395 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
e1eeedd0
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396 sbuf_trim(&sb);
397 sbuf_finish(&sb);
398 device_set_desc_copy(dev, sbuf_data(&sb));
399 sbuf_delete(&sb);
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400 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
401
402 return_VALUE (0);
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403}
404
405static int
406acpi_attach(device_t dev)
407{
408 struct acpi_softc *sc;
409 ACPI_STATUS status;
f9d8cd12 410 int error, state;
5ed44076 411 UINT32 flags;
f9d8cd12 412 UINT8 TypeA, TypeB;
5ed44076 413 char *env;
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414
415 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
e1eeedd0 416
5ed44076 417 sc = device_get_softc(dev);
5ed44076 418 sc->acpi_dev = dev;
10f97674 419 callout_init(&sc->susp_force_to);
5ed44076 420
c877f0f6 421 if ((error = acpi_task_thread_init())) {
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422 device_printf(dev, "Could not start task thread.\n");
423 goto out;
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424 }
425
e1eeedd0 426 error = ENXIO;
e1eeedd0 427
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428 /* Initialize resource manager. */
429 acpi_rman_io.rm_type = RMAN_ARRAY;
430 acpi_rman_io.rm_start = 0;
431 acpi_rman_io.rm_end = 0xffff;
10f97674 432 acpi_rman_io.rm_descr = "ACPI I/O ports";
65cd6ac8 433 if (rman_init(&acpi_rman_io, -1) != 0)
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434 panic("acpi rman_init IO ports failed");
435 acpi_rman_mem.rm_type = RMAN_ARRAY;
436 acpi_rman_mem.rm_start = 0;
437 acpi_rman_mem.rm_end = ~0ul;
10f97674 438 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
65cd6ac8 439 if (rman_init(&acpi_rman_mem, -1) != 0)
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440 panic("acpi rman_init memory failed");
441
10f97674 442 /* Initialise the ACPI mutex */
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443 ACPI_LOCK_INIT(acpi, "acpi");
444 ACPI_SERIAL_INIT(acpi);
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445
446 /*
447 * Set the globals from our tunables. This is needed because ACPI-CA
448 * uses UINT8 for some values and we have no tunable_byte.
449 */
450 AcpiGbl_AllMethodsSerialized = acpi_serialize_methods;
451 AcpiGbl_EnableInterpreterSlack = TRUE;
452
453 /* Start up the ACPI CA subsystem. */
454 status = AcpiInitializeSubsystem();
455 if (ACPI_FAILURE(status)) {
456 device_printf(dev, "Could not initialize Subsystem: %s\n",
457 AcpiFormatException(status));
458 goto out;
459 }
460
461 /* Load ACPI name space. */
462 status = AcpiLoadTables();
463 if (ACPI_FAILURE(status)) {
464 device_printf(dev, "Could not load Namespace: %s\n",
465 AcpiFormatException(status));
466 goto out;
467 }
468
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AP
469 /* Handle MCFG table if present. */
470 acpi_enable_pcie();
471
5ed44076 472 /* Install the default address space handlers. */
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MD
473 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
474 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
475 if (ACPI_FAILURE(status)) {
476 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
477 AcpiFormatException(status));
478 goto out;
479 }
480 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
481 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
482 if (ACPI_FAILURE(status)) {
483 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
484 AcpiFormatException(status));
485 goto out;
486 }
487 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
488 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
489 if (ACPI_FAILURE(status)) {
490 device_printf(dev, "could not initialise PciConfig handler: %s\n",
491 AcpiFormatException(status));
492 goto out;
493 }
494
495 /*
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MD
496 * Note that some systems (specifically, those with namespace evaluation
497 * issues that require the avoidance of parts of the namespace) must
498 * avoid running _INI and _STA on everything, as well as dodging the final
499 * object init pass.
500 *
501 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
502 *
503 * XXX We should arrange for the object init pass after we have attached
504 * all our child devices, but on many systems it works here.
505 */
5ed44076 506 flags = 0;
728aa6ee 507 if (ktestenv("debug.acpi.avoid"))
5ed44076 508 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
10f97674
AP
509
510 /* Bring the hardware and basic handlers online. */
5ed44076
MD
511 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
512 device_printf(dev, "Could not enable ACPI: %s\n",
513 AcpiFormatException(status));
514 goto out;
515 }
516
517 /*
afaba886
SZ
518 * Fix up the interrupt timer after enabling ACPI, so that the
519 * interrupt cputimer that choked by ACPI power management could
520 * be resurrected before probing various devices.
521 */
522 DELAY(5000);
523 cputimer_intr_pmfixup();
524
525 /*
5ed44076
MD
526 * Call the ECDT probe function to provide EC functionality before
527 * the namespace has been evaluated.
10f97674
AP
528 *
529 * XXX This happens before the sysresource devices have been probed and
530 * attached so its resources come from nexus0. In practice, this isn't
531 * a problem but should be addressed eventually.
5ed44076
MD
532 */
533 acpi_ec_ecdt_probe(dev);
534
10f97674 535 /* Bring device objects and regions online. */
5ed44076
MD
536 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
537 device_printf(dev, "Could not initialize ACPI objects: %s\n",
538 AcpiFormatException(status));
539 goto out;
540 }
541
542 /*
543 * Setup our sysctl tree.
544 *
545 * XXX: This doesn't check to make sure that none of these fail.
546 */
547 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
548 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
549 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
550 device_get_name(dev), CTLFLAG_RD, 0, "");
551 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
552 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
553 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
554 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
555 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
556 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
557 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
558 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
559 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
560 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
561 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
562 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
563 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
564 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
565 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
566 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
567 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
568 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
569 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674
AP
570 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
571 "sleep delay");
5ed44076 572 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674 573 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
5ed44076 574 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674 575 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
5ed44076 576 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674
AP
577 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
578 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
579 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
580 OID_AUTO, "handle_reboot", CTLFLAG_RW,
581 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
5ed44076
MD
582
583 /*
49e48b8a 584 * Default to 1 second before sleeping to give some machines time to
5ed44076
MD
585 * stabilize.
586 */
49e48b8a 587 sc->acpi_sleep_delay = 1;
5ed44076
MD
588 if (bootverbose)
589 sc->acpi_verbose = 1;
10f97674
AP
590 if ((env = kgetenv("hw.acpi.verbose")) != NULL) {
591 if (strcmp(env, "0") != 0)
592 sc->acpi_verbose = 1;
728aa6ee 593 kfreeenv(env);
5ed44076
MD
594 }
595
a5d744aa
SZ
596 /* Only enable reboot by default if the FADT says it is available. */
597 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
598 sc->acpi_handle_reboot = 1;
599
5ed44076 600 /* Only enable S4BIOS by default if the FACS says it is available. */
e52a9121 601 if (AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
10f97674 602 sc->acpi_s4bios = 1;
5ed44076
MD
603
604 /*
f9d8cd12
MD
605 * Dispatch the default sleep state to devices. The lid switch is set
606 * to NONE by default to avoid surprising users.
5ed44076 607 */
f9d8cd12
MD
608 sc->acpi_power_button_sx = ACPI_STATE_S5;
609 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
5ed44076
MD
610 sc->acpi_standby_sx = ACPI_STATE_S1;
611 sc->acpi_suspend_sx = ACPI_STATE_S3;
612
f9d8cd12
MD
613 /* Pick the first valid sleep state for the sleep button default. */
614 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
10f97674 615 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
f9d8cd12
MD
616 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
617 sc->acpi_sleep_button_sx = state;
618 break;
619 }
620
5ed44076
MD
621 acpi_enable_fixed_events(sc);
622
623 /*
624 * Scan the namespace and attach/initialise children.
625 */
5ed44076 626
10f97674 627 /* Register our shutdown handler. */
5ed44076
MD
628 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
629 SHUTDOWN_PRI_LAST);
630
631 /*
632 * Register our acpi event handlers.
633 * XXX should be configurable eg. via userland policy manager.
634 */
635 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
636 sc, ACPI_EVENT_PRI_LAST);
637 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
638 sc, ACPI_EVENT_PRI_LAST);
639
640 /* Flag our initial states. */
641 sc->acpi_enabled = 1;
642 sc->acpi_sstate = ACPI_STATE_S0;
643 sc->acpi_sleep_disabled = 0;
5ed44076 644 /* Create the control device */
fef8985e 645 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644,
5ed44076
MD
646 "acpi");
647 sc->acpi_dev_t->si_drv1 = sc;
648
5ed44076
MD
649 if ((error = acpi_machdep_init(dev)))
650 goto out;
651
652 /* Register ACPI again to pass the correct argument of pm_func. */
653 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
654
655 if (!acpi_disabled("bus"))
656 acpi_probe_children(dev);
657
457bd2b6
MA
658 /* Update all GPEs and enable runtime GPEs. */
659 status = AcpiUpdateAllGpes();
4efc8147
SZ
660 if (ACPI_FAILURE(status)) {
661 device_printf(dev, "Could not update all GPEs: %s\n",
662 AcpiFormatException(status));
663 }
457bd2b6
MA
664
665 /* Allow sleep request after a while. */
666 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */
667
5ed44076
MD
668 error = 0;
669
670 out:
ef612539 671 cputimer_intr_pmfixup();
5ed44076
MD
672 return_VALUE (error);
673}
674
49e48b8a 675static int
10f97674 676acpi_suspend(device_t dev)
49e48b8a 677{
10f97674
AP
678 device_t child, *devlist;
679 int error, i, numdevs, pstate;
49e48b8a 680
10f97674
AP
681 GIANT_REQUIRED;
682
683 /* First give child devices a chance to suspend. */
684 error = bus_generic_suspend(dev);
685 if (error)
686 return (error);
687
688 /*
689 * Now, set them into the appropriate power state, usually D3. If the
690 * device has an _SxD method for the next sleep state, use that power
691 * state instead.
692 */
693 device_get_children(dev, &devlist, &numdevs);
694 for (i = 0; i < numdevs; i++) {
695 /* If the device is not attached, we've powered it down elsewhere. */
696 child = devlist[i];
697 if (!device_is_attached(child))
698 continue;
699
700 /*
701 * Default to D3 for all sleep states. The _SxD method is optional
702 * so set the powerstate even if it's absent.
703 */
704 pstate = PCI_POWERSTATE_D3;
705 error = acpi_device_pwr_for_sleep(device_get_parent(child),
706 child, &pstate);
707 if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
708 pci_set_powerstate(child, pstate);
709 }
710 kfree(devlist, M_TEMP);
711 error = 0;
712
713 return (error);
49e48b8a
MD
714}
715
10f97674
AP
716static int
717acpi_resume(device_t dev)
f9d8cd12 718{
10f97674
AP
719 ACPI_HANDLE handle;
720 int i, numdevs;
721 device_t child, *devlist;
722
723 GIANT_REQUIRED;
f9d8cd12
MD
724
725 /*
10f97674
AP
726 * Put all devices in D0 before resuming them. Call _S0D on each one
727 * since some systems expect this.
f9d8cd12 728 */
10f97674
AP
729 device_get_children(dev, &devlist, &numdevs);
730 for (i = 0; i < numdevs; i++) {
731 child = devlist[i];
732 handle = acpi_get_handle(child);
733 if (handle)
734 AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
735 if (device_is_attached(child) && acpi_do_powerstate)
736 pci_set_powerstate(child, PCI_POWERSTATE_D0);
f9d8cd12 737 }
10f97674
AP
738 kfree(devlist, M_TEMP);
739
740 return (bus_generic_resume(dev));
741}
742
743static int
744acpi_shutdown(device_t dev)
745{
746
747 GIANT_REQUIRED;
748
749 /* Allow children to shutdown first. */
750 bus_generic_shutdown(dev);
f9d8cd12
MD
751
752 /*
10f97674
AP
753 * Enable any GPEs that are able to power-on the system (i.e., RTC).
754 * Also, disable any that are not valid for this state (most).
f9d8cd12 755 */
10f97674 756 acpi_wake_prep_walk(ACPI_STATE_S5);
f9d8cd12 757
10f97674 758 return (0);
f9d8cd12
MD
759}
760
5ed44076
MD
761/*
762 * Handle a new device being added
763 */
764static device_t
10f97674 765acpi_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
5ed44076
MD
766{
767 struct acpi_device *ad;
768 device_t child;
769
10f97674
AP
770 if ((ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
771 return (NULL);
5ed44076
MD
772
773 resource_list_init(&ad->ad_rl);
2581072f 774 child = device_add_child_ordered(parent, order, name, unit);
5ed44076
MD
775 if (child != NULL)
776 device_set_ivars(child, ad);
10f97674
AP
777 else
778 kfree(ad, M_ACPIDEV);
5ed44076
MD
779 return (child);
780}
781
782static int
783acpi_print_child(device_t bus, device_t child)
784{
785 struct acpi_device *adev = device_get_ivars(child);
786 struct resource_list *rl = &adev->ad_rl;
787 int retval = 0;
788
789 retval += bus_print_child_header(bus, child);
790 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
791 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
792 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
793 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
10f97674
AP
794 if (device_get_flags(child))
795 retval += kprintf(" flags %#x", device_get_flags(child));
5ed44076
MD
796 retval += bus_print_child_footer(bus, child);
797
798 return (retval);
799}
800
10f97674
AP
801/*
802 * If this device is an ACPI child but no one claimed it, attempt
803 * to power it off. We'll power it back up when a driver is added.
804 *
805 * XXX Disabled for now since many necessary devices (like fdc and
806 * ATA) don't claim the devices we created for them but still expect
807 * them to be powered up.
808 */
809static void
810acpi_probe_nomatch(device_t bus, device_t child)
811{
812
813 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
814}
815
816/*
817 * If a new driver has a chance to probe a child, first power it up.
818 *
819 * XXX Disabled for now (see acpi_probe_nomatch for details).
820 */
821static void
822acpi_driver_added(device_t dev, driver_t *driver)
823{
824 device_t child, *devlist;
825 int i, numdevs;
826
827 DEVICE_IDENTIFY(driver, dev);
828 device_get_children(dev, &devlist, &numdevs);
829 for (i = 0; i < numdevs; i++) {
830 child = devlist[i];
831 if (device_get_state(child) == DS_NOTPRESENT) {
832 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
833 if (device_probe_and_attach(child) != 0)
834 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
835 }
836 }
837 kfree(devlist, M_TEMP);
838}
839
f9d8cd12
MD
840/* Location hint for devctl(8) */
841static int
842acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
843 size_t buflen)
844{
845 struct acpi_device *dinfo = device_get_ivars(child);
846
847 if (dinfo->ad_handle)
10f97674 848 ksnprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
f9d8cd12 849 else
10f97674 850 ksnprintf(buf, buflen, "unknown");
f9d8cd12
MD
851 return (0);
852}
853
854/* PnP information for devctl(8) */
855static int
856acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
857 size_t buflen)
858{
f9d8cd12
MD
859 ACPI_DEVICE_INFO *adinfo;
860 struct acpi_device *dinfo = device_get_ivars(child);
861 char *end;
862 int error;
863
29bac728 864 error = AcpiGetObjectInfo(dinfo->ad_handle, &adinfo);
4efc8147 865 if (error) {
10f97674 866 ksnprintf(buf, buflen, "unknown");
4efc8147 867 } else {
f8c7a42d 868 ksnprintf(buf, buflen, "_HID=%s _UID=%lu",
10f97674 869 (adinfo->Valid & ACPI_VALID_HID) ?
29bac728 870 adinfo->HardwareId.String : "none",
10f97674 871 (adinfo->Valid & ACPI_VALID_UID) ?
29bac728 872 strtoul(adinfo->UniqueId.String, &end, 10) : 0);
4efc8147
SZ
873 if (adinfo)
874 AcpiOsFree(adinfo);
29bac728 875 }
f9d8cd12
MD
876 return (0);
877}
5ed44076
MD
878
879/*
880 * Handle per-device ivars
881 */
882static int
883acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
884{
885 struct acpi_device *ad;
886
887 if ((ad = device_get_ivars(child)) == NULL) {
e3869ec7 888 kprintf("device has no ivars\n");
5ed44076
MD
889 return (ENOENT);
890 }
891
892 /* ACPI and ISA compatibility ivars */
893 switch(index) {
894 case ACPI_IVAR_HANDLE:
895 *(ACPI_HANDLE *)result = ad->ad_handle;
896 break;
897 case ACPI_IVAR_MAGIC:
10f97674 898 *(uintptr_t *)result = ad->ad_magic;
5ed44076
MD
899 break;
900 case ACPI_IVAR_PRIVATE:
901 *(void **)result = ad->ad_private;
902 break;
10f97674
AP
903 case ACPI_IVAR_FLAGS:
904 *(int *)result = ad->ad_flags;
905 break;
5ed44076
MD
906 case ISA_IVAR_VENDORID:
907 case ISA_IVAR_SERIAL:
908 case ISA_IVAR_COMPATID:
909 *(int *)result = -1;
910 break;
911 case ISA_IVAR_LOGICALID:
912 *(int *)result = acpi_isa_get_logicalid(child);
913 break;
914 default:
915 return (ENOENT);
916 }
917
918 return (0);
919}
920
921static int
922acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
923{
924 struct acpi_device *ad;
925
926 if ((ad = device_get_ivars(child)) == NULL) {
e3869ec7 927 kprintf("device has no ivars\n");
5ed44076
MD
928 return (ENOENT);
929 }
930
931 switch(index) {
932 case ACPI_IVAR_HANDLE:
933 ad->ad_handle = (ACPI_HANDLE)value;
934 break;
935 case ACPI_IVAR_MAGIC:
10f97674 936 ad->ad_magic = (uintptr_t)value;
5ed44076
MD
937 break;
938 case ACPI_IVAR_PRIVATE:
939 ad->ad_private = (void *)value;
940 break;
10f97674
AP
941 case ACPI_IVAR_FLAGS:
942 ad->ad_flags = (int)value;
943 break;
5ed44076
MD
944 default:
945 panic("bad ivar write request (%d)", index);
946 return (ENOENT);
947 }
948
949 return (0);
950}
951
5ed44076
MD
952/*
953 * Handle child resource allocation/removal
954 */
c8b4f0e6
YT
955static struct resource_list *
956acpi_get_rlist(device_t dev, device_t child)
5ed44076 957{
c8b4f0e6 958 struct acpi_device *ad;
5ed44076 959
c8b4f0e6
YT
960 ad = device_get_ivars(child);
961 return (&ad->ad_rl);
5ed44076
MD
962}
963
10f97674
AP
964/*
965 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
966 * duplicates, we merge any in the sysresource attach routine.
967 */
968static int
969acpi_sysres_alloc(device_t dev)
970{
971 struct resource *res;
972 struct resource_list *rl;
973 struct resource_list_entry *rle;
974 struct rman *rm;
975 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
976 device_t *children;
977 int child_count, i;
978 /*
979 * Probe/attach any sysresource devices. This would be unnecessary if we
980 * had multi-pass probe/attach.
981 */
982 if (device_get_children(dev, &children, &child_count) != 0)
983 return (ENXIO);
984 for (i = 0; i < child_count; i++) {
985 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
986 device_probe_and_attach(children[i]);
987 }
988 kfree(children, M_TEMP);
989
990 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
991 if(!rl)
992 return 0;
993 SLIST_FOREACH(rle, rl, link) {
994 if (rle->res != NULL) {
995 device_printf(dev, "duplicate resource for %lx\n", rle->start);
996 continue;
997 }
998
999 /* Only memory and IO resources are valid here. */
1000 switch (rle->type) {
1001 case SYS_RES_IOPORT:
1002 rm = &acpi_rman_io;
1003 break;
1004 case SYS_RES_MEMORY:
1005 rm = &acpi_rman_mem;
1006 break;
1007 default:
1008 continue;
1009 }
1010
1011 /* Pre-allocate resource and add to our rman pool. */
1012 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
4f7fe8c7
SZ
1013 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count,
1014 0, -1);
10f97674
AP
1015 if (res != NULL) {
1016 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1017 rle->res = res;
1018 } else
1019 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1020 rle->start, rle->count, rle->type);
1021 }
1022 return (0);
1023}
1024
5ed44076
MD
1025static struct resource *
1026acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
4f7fe8c7 1027 u_long start, u_long end, u_long count, u_int flags, int cpuid)
5ed44076 1028{
10f97674 1029 ACPI_RESOURCE ares;
5ed44076
MD
1030 struct acpi_device *ad = device_get_ivars(child);
1031 struct resource_list *rl = &ad->ad_rl;
c8b4f0e6
YT
1032 struct resource_list_entry *rle;
1033 struct resource *res;
1034 struct rman *rm;
10f97674
AP
1035
1036 res = NULL;
1037
1038 /* We only handle memory and IO resources through rman. */
1039 switch (type) {
1040 case SYS_RES_IOPORT:
1041 rm = &acpi_rman_io;
1042 break;
1043 case SYS_RES_MEMORY:
1044 rm = &acpi_rman_mem;
1045 break;
1046 default:
1047 rm = NULL;
1048 }
1049
1050 ACPI_SERIAL_BEGIN(acpi);
c8b4f0e6
YT
1051
1052 /*
1053 * If this is an allocation of the "default" range for a given RID, and
1054 * we know what the resources for this device are (i.e., they're on the
1055 * child's resource list), use those start/end values.
1056 */
10f97674 1057 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
c8b4f0e6
YT
1058 rle = resource_list_find(rl, type, *rid);
1059 if (rle == NULL)
10f97674 1060 goto out;
c8b4f0e6
YT
1061 start = rle->start;
1062 end = rle->end;
1063 count = rle->count;
4f7fe8c7 1064 cpuid = rle->cpuid;
c8b4f0e6
YT
1065 }
1066
10f97674
AP
1067 /*
1068 * If this is an allocation of a specific range, see if we can satisfy
1069 * the request from our system resource regions. If we can't, pass the
1070 * request up to the parent.
1071 */
1072 if (start + count - 1 == end && rm != NULL)
1073 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1074 child);
1075 if (res == NULL) {
1076 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
4f7fe8c7 1077 start, end, count, flags, cpuid);
10f97674
AP
1078 } else {
1079 rman_set_rid(res, *rid);
5ed44076 1080
10f97674
AP
1081 /* If requested, activate the resource using the parent's method. */
1082 if (flags & RF_ACTIVE)
1083 if (bus_activate_resource(child, type, *rid, res) != 0) {
1084 rman_release_resource(res);
1085 res = NULL;
1086 goto out;
1087 }
c8b4f0e6
YT
1088 }
1089
10f97674
AP
1090 if (res != NULL && device_get_parent(child) == bus)
1091 switch (type) {
1092 case SYS_RES_IRQ:
1093 /*
1094 * Since bus_config_intr() takes immediate effect, we cannot
1095 * configure the interrupt associated with a device when we
1096 * parse the resources but have to defer it until a driver
1097 * actually allocates the interrupt via bus_alloc_resource().
1098 *
1099 * XXX: Should we handle the lookup failing?
1100 */
10f97674
AP
1101 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1102 acpi_config_intr(child, &ares);
1103 else
1104 kprintf("irq resource not found\n");
1105 break;
c8b4f0e6
YT
1106 }
1107
10f97674
AP
1108out:
1109 ACPI_SERIAL_END(acpi);
c8b4f0e6 1110 return (res);
5ed44076
MD
1111}
1112
1113static int
c8b4f0e6
YT
1114acpi_release_resource(device_t bus, device_t child, int type, int rid,
1115 struct resource *r)
5ed44076 1116{
10f97674 1117 struct rman *rm;
c8b4f0e6
YT
1118 int ret;
1119
10f97674
AP
1120 /* We only handle memory and IO resources through rman. */
1121 switch (type) {
1122 case SYS_RES_IOPORT:
1123 rm = &acpi_rman_io;
1124 break;
1125 case SYS_RES_MEMORY:
1126 rm = &acpi_rman_mem;
1127 break;
1128 default:
1129 rm = NULL;
1130 }
1131
1132 ACPI_SERIAL_BEGIN(acpi);
1133
c8b4f0e6 1134 /*
10f97674
AP
1135 * If this resource belongs to one of our internal managers,
1136 * deactivate it and release it to the local pool. If it doesn't,
1137 * pass this request up to the parent.
c8b4f0e6 1138 */
10f97674 1139 if (rm != NULL && rman_is_region_manager(r, rm)) {
c8b4f0e6
YT
1140 if (rman_get_flags(r) & RF_ACTIVE) {
1141 ret = bus_deactivate_resource(child, type, rid, r);
1142 if (ret != 0)
10f97674 1143 goto out;
c8b4f0e6
YT
1144 }
1145 ret = rman_release_resource(r);
1146 } else
1147 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
5ed44076 1148
10f97674
AP
1149out:
1150 ACPI_SERIAL_END(acpi);
c8b4f0e6 1151 return (ret);
5ed44076
MD
1152}
1153
10f97674
AP
1154static void
1155acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1156{
1157 struct resource_list *rl;
1158
1159 rl = acpi_get_rlist(bus, child);
1160 resource_list_delete(rl, type, rid);
1161}
1162
5ed44076 1163/* Allocate an IO port or memory resource, given its GAS. */
10f97674
AP
1164int
1165acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1166 struct resource **res, u_int flags)
5ed44076 1167{
10f97674 1168 int error, res_type;
5ed44076 1169
10f97674
AP
1170 error = ENOMEM;
1171 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1172 return (EINVAL);
5ed44076 1173
10f97674 1174 /* We only support memory and IO spaces. */
e1eeedd0 1175 switch (gas->SpaceId) {
5ed44076 1176 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
10f97674 1177 res_type = SYS_RES_MEMORY;
5ed44076
MD
1178 break;
1179 case ACPI_ADR_SPACE_SYSTEM_IO:
10f97674 1180 res_type = SYS_RES_IOPORT;
5ed44076
MD
1181 break;
1182 default:
10f97674 1183 return (EOPNOTSUPP);
5ed44076
MD
1184 }
1185
10f97674
AP
1186 /*
1187 * If the register width is less than 8, assume the BIOS author means
1188 * it is a bit field and just allocate a byte.
1189 */
1190 if (gas->BitWidth && gas->BitWidth < 8)
1191 gas->BitWidth = 8;
5ed44076 1192
10f97674
AP
1193 /* Validate the address after we're sure we support the space. */
1194 if (gas->Address == 0 || gas->BitWidth == 0)
1195 return (EINVAL);
1196
1197 bus_set_resource(dev, res_type, *rid, gas->Address,
b47b3275 1198 gas->BitWidth / 8, -1);
10f97674
AP
1199 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1200 if (*res != NULL) {
1201 *type = res_type;
1202 error = 0;
1203 } else
1204 bus_delete_resource(dev, res_type, *rid);
5ed44076 1205
10f97674
AP
1206 return (error);
1207}
1208
1209/* Probe _HID and _CID for compatible ISA PNP ids. */
5ed44076
MD
1210static uint32_t
1211acpi_isa_get_logicalid(device_t dev)
1212{
1213 ACPI_DEVICE_INFO *devinfo;
5ed44076
MD
1214 ACPI_HANDLE h;
1215 ACPI_STATUS error;
1216 u_int32_t pnpid;
5ed44076
MD
1217
1218 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1219
491bbbaf 1220 devinfo = NULL;
5ed44076 1221 pnpid = 0;
5ed44076 1222
5ed44076
MD
1223 /* Fetch and validate the HID. */
1224 if ((h = acpi_get_handle(dev)) == NULL)
1225 goto out;
29bac728 1226 error = AcpiGetObjectInfo(h, &devinfo);
5ed44076
MD
1227 if (ACPI_FAILURE(error))
1228 goto out;
5ed44076
MD
1229
1230 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
29bac728 1231 pnpid = PNP_EISAID(devinfo->HardwareId.String);
5ed44076
MD
1232
1233out:
29bac728 1234 if (devinfo)
4efc8147 1235 AcpiOsFree(devinfo);
5ed44076
MD
1236 return_VALUE (pnpid);
1237}
1238
1239static int
1240acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1241{
1242 ACPI_DEVICE_INFO *devinfo;
5ed44076
MD
1243 ACPI_HANDLE h;
1244 ACPI_STATUS error;
1245 uint32_t *pnpid;
1246 int valid, i;
5ed44076
MD
1247
1248 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1249
7e1b933a 1250 devinfo = NULL;
5ed44076
MD
1251 pnpid = cids;
1252 valid = 0;
5ed44076 1253
5ed44076
MD
1254 /* Fetch and validate the CID */
1255 if ((h = acpi_get_handle(dev)) == NULL)
1256 goto out;
29bac728 1257 error = AcpiGetObjectInfo(h, &devinfo);
5ed44076
MD
1258 if (ACPI_FAILURE(error))
1259 goto out;
5ed44076
MD
1260 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
1261 goto out;
1262
29bac728
MA
1263 if (devinfo->CompatibleIdList.Count < count)
1264 count = devinfo->CompatibleIdList.Count;
5ed44076 1265 for (i = 0; i < count; i++) {
29bac728 1266 if (strncmp(devinfo->CompatibleIdList.Ids[i].String, "PNP", 3) != 0)
5ed44076 1267 continue;
29bac728 1268 *pnpid++ = PNP_EISAID(devinfo->CompatibleIdList.Ids[i].String);
5ed44076
MD
1269 valid++;
1270 }
1271
1272out:
29bac728
MA
1273 if (devinfo)
1274 AcpiOsFree(devinfo);
5ed44076
MD
1275 return_VALUE (valid);
1276}
1277
676159d4
HT
1278static char *
1279acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1280{
1281 ACPI_HANDLE h;
1282 int i;
1283
1284 h = acpi_get_handle(dev);
1285 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1286 return (NULL);
1287
1288 /* Try to match one of the array of IDs with a HID or CID. */
1289 for (i = 0; ids[i] != NULL; i++) {
1290 if (acpi_MatchHid(h, ids[i]))
1291 return (ids[i]);
1292 }
1293 return (NULL);
1294}
1295
10f97674
AP
1296static ACPI_STATUS
1297acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1298 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1299{
1300 ACPI_HANDLE h;
1301
1302 if (dev == NULL)
1303 h = ACPI_ROOT_OBJECT;
1304 else if ((h = acpi_get_handle(dev)) == NULL)
1305 return (AE_BAD_PARAMETER);
1306 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1307}
1308
1309static int
1310acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1311{
1312 struct acpi_softc *sc;
1313 ACPI_HANDLE handle;
1314 ACPI_STATUS status;
1315 char sxd[8];
1316 int error;
1317
1318 sc = device_get_softc(bus);
1319 handle = acpi_get_handle(dev);
1320
1321 /*
1322 * XXX If we find these devices, don't try to power them down.
1323 * The serial and IRDA ports on my T23 hang the system when
1324 * set to D3 and it appears that such legacy devices may
1325 * need special handling in their drivers.
1326 */
1327 if (handle == NULL ||
1328 acpi_MatchHid(handle, "PNP0500") ||
1329 acpi_MatchHid(handle, "PNP0501") ||
1330 acpi_MatchHid(handle, "PNP0502") ||
1331 acpi_MatchHid(handle, "PNP0510") ||
1332 acpi_MatchHid(handle, "PNP0511"))
1333 return (ENXIO);
1334
1335 /*
1336 * Override next state with the value from _SxD, if present. If no
1337 * dstate argument was provided, don't fetch the return value.
1338 */
1339 ksnprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1340 if (dstate)
1341 status = acpi_GetInteger(handle, sxd, dstate);
1342 else
1343 status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
1344
1345 switch (status) {
1346 case AE_OK:
1347 error = 0;
1348 break;
1349 case AE_NOT_FOUND:
1350 error = ESRCH;
1351 break;
1352 default:
1353 error = ENXIO;
1354 break;
1355 }
1356
1357 return (error);
1358}
1359
1360/* Callback arg for our implementation of walking the namespace. */
1361struct acpi_device_scan_ctx {
1362 acpi_scan_cb_t user_fn;
1363 void *arg;
1364 ACPI_HANDLE parent;
1365};
1366
1367static ACPI_STATUS
1368acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1369{
1370 struct acpi_device_scan_ctx *ctx;
1371 device_t dev, old_dev;
1372 ACPI_STATUS status;
1373 ACPI_OBJECT_TYPE type;
1374
1375 /*
1376 * Skip this device if we think we'll have trouble with it or it is
1377 * the parent where the scan began.
1378 */
1379 ctx = (struct acpi_device_scan_ctx *)arg;
1380 if (acpi_avoid(h) || h == ctx->parent)
1381 return (AE_OK);
1382
1383 /* If this is not a valid device type (e.g., a method), skip it. */
1384 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1385 return (AE_OK);
1386 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1387 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1388 return (AE_OK);
1389
1390 /*
1391 * Call the user function with the current device. If it is unchanged
1392 * afterwards, return. Otherwise, we update the handle to the new dev.
1393 */
1394 old_dev = acpi_get_device(h);
1395 dev = old_dev;
1396 status = ctx->user_fn(h, &dev, level, ctx->arg);
1397 if (ACPI_FAILURE(status) || old_dev == dev)
1398 return (status);
1399
1400 /* Remove the old child and its connection to the handle. */
1401 if (old_dev != NULL) {
1402 device_delete_child(device_get_parent(old_dev), old_dev);
1403 AcpiDetachData(h, acpi_fake_objhandler);
1404 }
1405
1406 /* Recreate the handle association if the user created a device. */
1407 if (dev != NULL)
1408 AcpiAttachData(h, acpi_fake_objhandler, dev);
1409
1410 return (AE_OK);
1411}
1412
1413static ACPI_STATUS
1414acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1415 acpi_scan_cb_t user_fn, void *arg)
1416{
1417 ACPI_HANDLE h;
1418 struct acpi_device_scan_ctx ctx;
1419
1420 if (acpi_disabled("children"))
1421 return (AE_OK);
1422
1423 if (dev == NULL)
1424 h = ACPI_ROOT_OBJECT;
1425 else if ((h = acpi_get_handle(dev)) == NULL)
1426 return (AE_BAD_PARAMETER);
1427 ctx.user_fn = user_fn;
1428 ctx.arg = arg;
1429 ctx.parent = h;
b3af5338
SZ
1430 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1431 acpi_device_scan_cb, NULL, &ctx, NULL));
10f97674
AP
1432}
1433
1434/*
1435 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1436 * device power states since it's close enough to ACPI.
1437 */
1438static int
1439acpi_set_powerstate_method(device_t bus, device_t child, int state)
1440{
1441 ACPI_HANDLE h;
1442 ACPI_STATUS status;
1443 int error;
1444
1445 error = 0;
1446 h = acpi_get_handle(child);
1447 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
1448 return (EINVAL);
1449 if (h == NULL)
1450 return (0);
1451
1452 /* Ignore errors if the power methods aren't present. */
1453 status = acpi_pwr_switch_consumer(h, state);
1454 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
1455 && status != AE_BAD_PARAMETER)
1456 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
1457 state, acpi_name(h), AcpiFormatException(status));
1458
1459 return (error);
1460}
1461
5ed44076
MD
1462static int
1463acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1464{
1465 int result, cid_count, i;
1466 uint32_t lid, cids[8];
1467
1468 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1469
1470 /*
1471 * ISA-style drivers attached to ACPI may persist and
1472 * probe manually if we return ENOENT. We never want
1473 * that to happen, so don't ever return it.
1474 */
1475 result = ENXIO;
1476
1477 /* Scan the supplied IDs for a match */
1478 lid = acpi_isa_get_logicalid(child);
1479 cid_count = acpi_isa_get_compatid(child, cids, 8);
1480 while (ids && ids->ip_id) {
1481 if (lid == ids->ip_id) {
1482 result = 0;
1483 goto out;
1484 }
1485 for (i = 0; i < cid_count; i++) {
1486 if (cids[i] == ids->ip_id) {
1487 result = 0;
1488 goto out;
1489 }
1490 }
1491 ids++;
1492 }
1493
1494 out:
10f97674
AP
1495 if (result == 0 && ids->ip_desc)
1496 device_set_desc(child, ids->ip_desc);
1497
5ed44076
MD
1498 return_VALUE (result);
1499}
1500
1501/*
4ea06a72
AP
1502 * Look for a MCFG table. If it is present, use the settings for
1503 * domain (segment) 0 to setup PCI config space access via the memory
1504 * map.
1505 */
1506static void
1507acpi_enable_pcie(void)
1508{
1509 ACPI_TABLE_HEADER *hdr;
1510 ACPI_MCFG_ALLOCATION *alloc, *end;
1511 ACPI_STATUS status;
1512
1513 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1514 if (ACPI_FAILURE(status))
1515 return;
1516
1517 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1518 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1519 while (alloc < end) {
1520 if (alloc->PciSegment == 0) {
1521 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1522 alloc->EndBusNumber);
1523 return;
1524 }
1525 alloc++;
1526 }
1527}
1528
1529/*
10f97674 1530 * Scan all of the ACPI namespace and attach child devices.
5ed44076 1531 *
10f97674
AP
1532 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1533 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1534 * However, in violation of the spec, some systems place their PCI link
1535 * devices in \, so we have to walk the whole namespace. We check the
1536 * type of namespace nodes, so this should be ok.
5ed44076
MD
1537 */
1538static void
1539acpi_probe_children(device_t bus)
1540{
5ed44076
MD
1541
1542 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
5ed44076 1543
5ed44076
MD
1544 /*
1545 * Scan the namespace and insert placeholders for all the devices that
c8b4f0e6 1546 * we find. We also probe/attach any early devices.
5ed44076
MD
1547 *
1548 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1549 * we want to create nodes for all devices, not just those that are
1550 * currently present. (This assumes that we don't want to create/remove
1551 * devices as they appear, which might be smarter.)
1552 */
1553 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
b3af5338
SZ
1554 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100,
1555 acpi_probe_child, NULL, bus, NULL);
5ed44076 1556
10f97674
AP
1557 /* Pre-allocate resources for our rman from any sysresource devices. */
1558 acpi_sysres_alloc(bus);
c8b4f0e6
YT
1559 /* Create any static children by calling device identify methods. */
1560 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1561 bus_generic_probe(bus);
1562
10f97674 1563 /* Probe/attach all children, created staticly and from the namespace. */
5ed44076
MD
1564 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1565 bus_generic_attach(bus);
1566
1567 /*
1568 * Some of these children may have attached others as part of their attach
1569 * process (eg. the root PCI bus driver), so rescan.
1570 */
1571 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1572 bus_generic_attach(bus);
1573
49e48b8a
MD
1574 /* Attach wake sysctls. */
1575 acpi_wake_sysctl_walk(bus);
1576
5ed44076
MD
1577 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1578 return_VOID;
1579}
1580
10f97674
AP
1581/*
1582 * Determine the probe order for a given device.
1583 */
1584static void
1585acpi_probe_order(ACPI_HANDLE handle, int *order)
c8b4f0e6 1586{
10f97674 1587 ACPI_OBJECT_TYPE type;
c8b4f0e6 1588
10f97674
AP
1589 /*
1590 * 1. I/O port and memory system resource holders
1591 * 2. Embedded controllers (to handle early accesses)
1592 * 3. PCI Link Devices
1593 * 100000. CPUs
1594 */
1595 AcpiGetType(handle, &type);
1596 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
c8b4f0e6 1597 *order = 1;
10f97674 1598 else if (acpi_MatchHid(handle, "PNP0C09"))
c8b4f0e6 1599 *order = 2;
10f97674
AP
1600 else if (acpi_MatchHid(handle, "PNP0C0F"))
1601 *order = 3;
1602 else if (type == ACPI_TYPE_PROCESSOR)
1603 *order = 100000;
c8b4f0e6
YT
1604}
1605
5ed44076
MD
1606/*
1607 * Evaluate a child device and determine whether we might attach a device to
1608 * it.
1609 */
1610static ACPI_STATUS
1611acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1612{
29b0d8e7 1613 struct acpi_prw_data prw;
10f97674
AP
1614 ACPI_OBJECT_TYPE type;
1615 ACPI_HANDLE h;
1616 device_t bus, child;
1617 int order;
3e32463a 1618 char *handle_str;
5ed44076
MD
1619
1620 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1621
29b0d8e7 1622 if (acpi_disabled("children"))
4efc8147 1623 return_ACPI_STATUS (AE_OK);
29b0d8e7 1624
5ed44076 1625 /* Skip this device if we think we'll have trouble with it. */
10f97674 1626 if (acpi_avoid(handle))
5ed44076
MD
1627 return_ACPI_STATUS (AE_OK);
1628
c8b4f0e6 1629 bus = (device_t)context;
5ed44076 1630 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
4efc8147 1631 handle_str = acpi_name(handle);
10f97674 1632 switch (type) {
5ed44076 1633 case ACPI_TYPE_DEVICE:
10f97674
AP
1634 /*
1635 * Since we scan from \, be sure to skip system scope objects.
3e32463a
SZ
1636 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1637 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1638 * during the intialization and \_TZ_ is to support Notify() on it.
10f97674 1639 */
3e32463a
SZ
1640 if (strcmp(handle_str, "\\_SB_") == 0 ||
1641 strcmp(handle_str, "\\_TZ_") == 0)
10f97674
AP
1642 break;
1643
3e32463a 1644 if (acpi_parse_prw(handle, &prw) == 0)
4efc8147 1645 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
29b0d8e7 1646
3e32463a
SZ
1647 /* FALLTHROUGH */
1648 case ACPI_TYPE_PROCESSOR:
1649 case ACPI_TYPE_THERMAL:
1650 case ACPI_TYPE_POWER:
5ed44076 1651 /*
10f97674
AP
1652 * Create a placeholder device for this node. Sort the
1653 * placeholder so that the probe/attach passes will run
1654 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1655 * are reserved for special objects (i.e., system
1656 * resources). CPU devices have a very high order to
1657 * ensure they are probed after other devices.
5ed44076 1658 */
10f97674
AP
1659 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1660 order = level * 10 + 100;
1661 acpi_probe_order(handle, &order);
c8b4f0e6 1662 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1);
5ed44076
MD
1663 if (child == NULL)
1664 break;
c8b4f0e6
YT
1665
1666 /* Associate the handle with the device_t and vice versa. */
5ed44076 1667 acpi_set_handle(child, handle);
c8b4f0e6 1668 AcpiAttachData(handle, acpi_fake_objhandler, child);
5ed44076
MD
1669
1670 /*
1671 * Check that the device is present. If it's not present,
1672 * leave it disabled (so that we have a device_t attached to
1673 * the handle, but we don't probe it).
10f97674
AP
1674 *
1675 * XXX PCI link devices sometimes report "present" but not
1676 * "functional" (i.e. if disabled). Go ahead and probe them
1677 * anyway since we may enable them later.
5ed44076
MD
1678 */
1679 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
10f97674
AP
1680 /* Never disable PCI link devices. */
1681 if (acpi_MatchHid(handle, "PNP0C0F"))
1682 break;
1683 /*
1684 * Docking stations should remain enabled since the system
1685 * may be undocked at boot.
1686 */
1687 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1688 break;
1689
5ed44076
MD
1690 device_disable(child);
1691 break;
1692 }
1693
1694 /*
1695 * Get the device's resource settings and attach them.
1696 * Note that if the device has _PRS but no _CRS, we need
1697 * to decide when it's appropriate to try to configure the
1698 * device. Ignore the return value here; it's OK for the
1699 * device not to have any resources.
1700 */
f9d8cd12 1701 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
5ed44076
MD
1702 break;
1703 }
1704 }
1705
1706 return_ACPI_STATUS (AE_OK);
1707}
1708
c8b4f0e6
YT
1709/*
1710 * AcpiAttachData() requires an object handler but never uses it. This is a
1711 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1712 */
1713void
29bac728 1714acpi_fake_objhandler(ACPI_HANDLE h, void *data)
c8b4f0e6
YT
1715{
1716}
1717
5ed44076
MD
1718static void
1719acpi_shutdown_final(void *arg, int howto)
1720{
10f97674
AP
1721 struct acpi_softc *sc;
1722 ACPI_STATUS status;
5ed44076 1723
f9d8cd12 1724 /*
10f97674
AP
1725 * XXX Shutdown code should only run on the BSP (cpuid 0).
1726 * Some chipsets do not power off the system correctly if called from
1727 * an AP.
f9d8cd12 1728 */
10f97674 1729 sc = arg;
5ed44076 1730 if ((howto & RB_POWEROFF) != 0) {
f9d8cd12 1731 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
5ed44076 1732 if (ACPI_FAILURE(status)) {
e3869ec7 1733 kprintf("AcpiEnterSleepStatePrep failed - %s\n",
5ed44076
MD
1734 AcpiFormatException(status));
1735 return;
1736 }
e3869ec7 1737 kprintf("Powering system off using ACPI\n");
10f97674
AP
1738 ACPI_DISABLE_IRQS();
1739 status = AcpiEnterSleepState(ACPI_STATE_S5);
1740 if (ACPI_FAILURE(status)) {
1741 kprintf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1742 } else {
1743 DELAY(1000000);
1744 kprintf("ACPI power-off failed - timeout\n");
1745 }
a5d744aa 1746 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
10f97674 1747 /* Reboot using the reset register. */
a5d744aa 1748 status = AcpiReset();
10f97674 1749 if (ACPI_FAILURE(status)) {
2a90d6f5
SZ
1750 if (status != AE_NOT_EXIST)
1751 kprintf("ACPI reset failed - %s\n", AcpiFormatException(status));
10f97674
AP
1752 } else {
1753 DELAY(1000000);
1754 kprintf("ACPI reset failed - timeout\n");
1755 }
1756 } else if (sc->acpi_do_disable && panicstr == NULL) {
1757 /*
1758 * Only disable ACPI if the user requested. On some systems, writing
1759 * the disable value to SMI_CMD hangs the system.
1760 */
e3869ec7 1761 kprintf("Shutting down ACPI\n");
5ed44076
MD
1762 AcpiTerminate();
1763 }
1764}
1765
1766static void
1767acpi_enable_fixed_events(struct acpi_softc *sc)
1768{
1769 static int first_time = 1;
1770
5ed44076 1771 /* Enable and clear fixed events and install handlers. */
e1eeedd0 1772 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
5ed44076
MD
1773 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1774 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1775 acpi_event_power_button_sleep, sc);
1776 if (first_time)
1777 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1778 }
e1eeedd0 1779 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
5ed44076
MD
1780 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1781 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1782 acpi_event_sleep_button_sleep, sc);
1783 if (first_time)
1784 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1785 }
1786
1787 first_time = 0;
1788}
1789
1790/*
1791 * Returns true if the device is actually present and should
1792 * be attached to. This requires the present, enabled, UI-visible
1793 * and diagnostics-passed bits to be set.
1794 */
1795BOOLEAN
1796acpi_DeviceIsPresent(device_t dev)
1797{
1798 ACPI_DEVICE_INFO *devinfo;
1799 ACPI_HANDLE h;
5ed44076
MD
1800 ACPI_STATUS error;
1801 int ret;
1802
5ed44076
MD
1803 ret = FALSE;
1804 if ((h = acpi_get_handle(dev)) == NULL)
1805 return (FALSE);
29bac728 1806 error = AcpiGetObjectInfo(h, &devinfo);
5ed44076
MD
1807 if (ACPI_FAILURE(error))
1808 return (FALSE);
5ed44076
MD
1809
1810 /* If no _STA method, must be present */
1811 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1812 ret = TRUE;
1813
1814 /* Return true for 'present' and 'functioning' */
10f97674 1815 if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
5ed44076
MD
1816 ret = TRUE;
1817
29bac728 1818 AcpiOsFree(devinfo);
5ed44076
MD
1819 return (ret);
1820}
1821
1822/*
1823 * Returns true if the battery is actually present and inserted.
1824 */
1825BOOLEAN
1826acpi_BatteryIsPresent(device_t dev)
1827{
1828 ACPI_DEVICE_INFO *devinfo;
1829 ACPI_HANDLE h;
5ed44076
MD
1830 ACPI_STATUS error;
1831 int ret;
1832
5ed44076
MD
1833 ret = FALSE;
1834 if ((h = acpi_get_handle(dev)) == NULL)
1835 return (FALSE);
29bac728 1836 error = AcpiGetObjectInfo(h, &devinfo);
5ed44076
MD
1837 if (ACPI_FAILURE(error))
1838 return (FALSE);
5ed44076
MD
1839
1840 /* If no _STA method, must be present */
1841 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1842 ret = TRUE;
1843
10f97674
AP
1844 /* Return true for 'present', 'battery present', and 'functioning' */
1845 if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
5ed44076
MD
1846 ret = TRUE;
1847
29bac728 1848 AcpiOsFree(devinfo);
5ed44076
MD
1849 return (ret);
1850}
1851
1852/*
c8b4f0e6 1853 * Match a HID string against a handle
5ed44076
MD
1854 */
1855BOOLEAN
10f97674 1856acpi_MatchHid(ACPI_HANDLE h, const char *hid)
5ed44076
MD
1857{
1858 ACPI_DEVICE_INFO *devinfo;
5ed44076
MD
1859 ACPI_STATUS error;
1860 int ret, i;
1861
5ed44076 1862 ret = FALSE;
c8b4f0e6
YT
1863 if (hid == NULL || h == NULL)
1864 return (ret);
29bac728 1865 error = AcpiGetObjectInfo(h, &devinfo);
5ed44076 1866 if (ACPI_FAILURE(error))
c8b4f0e6 1867 return (ret);
5ed44076
MD
1868
1869 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
29bac728 1870 strcmp(hid, devinfo->HardwareId.String) == 0)
5ed44076
MD
1871 ret = TRUE;
1872 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
29bac728
MA
1873 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
1874 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
5ed44076
MD
1875 ret = TRUE;
1876 break;
1877 }
1878 }
1879 }
1880
29bac728 1881 AcpiOsFree(devinfo);
5ed44076
MD
1882 return (ret);
1883}
1884
1885/*
1886 * Return the handle of a named object within our scope, ie. that of (parent)
1887 * or one if its parents.
1888 */
1889ACPI_STATUS
1890acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1891{
1892 ACPI_HANDLE r;
1893 ACPI_STATUS status;
1894
5ed44076
MD
1895 /* Walk back up the tree to the root */
1896 for (;;) {
1897 status = AcpiGetHandle(parent, path, &r);
1898 if (ACPI_SUCCESS(status)) {
1899 *result = r;
1900 return (AE_OK);
1901 }
10f97674 1902 /* XXX Return error here? */
5ed44076
MD
1903 if (status != AE_NOT_FOUND)
1904 return (AE_OK);
1905 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1906 return (AE_NOT_FOUND);
1907 parent = r;
1908 }
1909}
1910
f9d8cd12
MD
1911/* Find the difference between two PM tick counts. */
1912uint32_t
1913acpi_TimerDelta(uint32_t end, uint32_t start)
1914{
1915 uint32_t delta;
1916
1917 if (end >= start)
1918 delta = end - start;
10f97674 1919 else if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
f9d8cd12 1920 delta = ((0xFFFFFFFF - start) + end + 1);
10f97674
AP
1921 else
1922 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
f9d8cd12
MD
1923 return (delta);
1924}
1925
5ed44076
MD
1926/*
1927 * Allocate a buffer with a preset data size.
1928 */
1929ACPI_BUFFER *
1930acpi_AllocBuffer(int size)
1931{
1932 ACPI_BUFFER *buf;
1933
10f97674
AP
1934 if ((buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
1935 return (NULL);
5ed44076
MD
1936 buf->Length = size;
1937 buf->Pointer = (void *)(buf + 1);
1938 return (buf);
1939}
1940
f9d8cd12
MD
1941ACPI_STATUS
1942acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1943{
1944 ACPI_OBJECT arg1;
1945 ACPI_OBJECT_LIST args;
1946
f9d8cd12
MD
1947 arg1.Type = ACPI_TYPE_INTEGER;
1948 arg1.Integer.Value = number;
1949 args.Count = 1;
1950 args.Pointer = &arg1;
1951
1952 return (AcpiEvaluateObject(handle, path, &args, NULL));
1953}
1954
5ed44076
MD
1955/*
1956 * Evaluate a path that should return an integer.
1957 */
1958ACPI_STATUS
f9d8cd12 1959acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
5ed44076
MD
1960{
1961 ACPI_STATUS status;
1962 ACPI_BUFFER buf;
1963 ACPI_OBJECT param;
1964
5ed44076
MD
1965 if (handle == NULL)
1966 handle = ACPI_ROOT_OBJECT;
1967
1968 /*
1969 * Assume that what we've been pointed at is an Integer object, or
1970 * a method that will return an Integer.
1971 */
1972 buf.Pointer = &param;
1973 buf.Length = sizeof(param);
1974 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1975 if (ACPI_SUCCESS(status)) {
1976 if (param.Type == ACPI_TYPE_INTEGER)
1977 *number = param.Integer.Value;
1978 else
1979 status = AE_TYPE;
1980 }
1981
1982 /*
1983 * In some applications, a method that's expected to return an Integer
1984 * may instead return a Buffer (probably to simplify some internal
1985 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1986 * convert it into an Integer as best we can.
1987 *
1988 * This is a hack.
1989 */
1990 if (status == AE_BUFFER_OVERFLOW) {
1991 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1992 status = AE_NO_MEMORY;
1993 } else {
1994 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1995 if (ACPI_SUCCESS(status))
1996 status = acpi_ConvertBufferToInteger(&buf, number);
1997 AcpiOsFree(buf.Pointer);
1998 }
1999 }
2000 return (status);
2001}
2002
2003ACPI_STATUS
f9d8cd12 2004acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
5ed44076
MD
2005{
2006 ACPI_OBJECT *p;
f9d8cd12 2007 UINT8 *val;
5ed44076
MD
2008 int i;
2009
2010 p = (ACPI_OBJECT *)bufp->Pointer;
2011 if (p->Type == ACPI_TYPE_INTEGER) {
2012 *number = p->Integer.Value;
2013 return (AE_OK);
2014 }
2015 if (p->Type != ACPI_TYPE_BUFFER)
2016 return (AE_TYPE);
2017 if (p->Buffer.Length > sizeof(int))
2018 return (AE_BAD_DATA);
2019
2020 *number = 0;
f9d8cd12 2021 val = p->Buffer.Pointer;
5ed44076 2022 for (i = 0; i < p->Buffer.Length; i++)
f9d8cd12 2023 *number += val[i] << (i * 8);
5ed44076
MD
2024 return (AE_OK);
2025}
2026
2027/*
2028 * Iterate over the elements of an a package object, calling the supplied
2029 * function for each element.
2030 *
2031 * XXX possible enhancement might be to abort traversal on error.
2032 */
2033ACPI_STATUS
2034acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2035 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2036{
2037 ACPI_OBJECT *comp;
2038 int i;
10f97674 2039
5ed44076
MD
2040 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2041 return (AE_BAD_PARAMETER);
2042
2043 /* Iterate over components */
2044 i = 0;
2045 comp = pkg->Package.Elements;
2046 for (; i < pkg->Package.Count; i++, comp++)
2047 func(comp, arg);
2048
2049 return (AE_OK);
2050}
2051
2052/*
2053 * Find the (index)th resource object in a set.
2054 */
2055ACPI_STATUS
2056acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2057{
2058 ACPI_RESOURCE *rp;
2059 int i;
2060
2061 rp = (ACPI_RESOURCE *)buf->Pointer;
2062 i = index;
2063 while (i-- > 0) {
10f97674 2064 /* Range check */
5ed44076
MD
2065 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2066 return (AE_BAD_PARAMETER);
2067
2068 /* Check for terminator */
e1eeedd0 2069 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
5ed44076
MD
2070 return (AE_NOT_FOUND);
2071 rp = ACPI_NEXT_RESOURCE(rp);
2072 }
2073 if (resp != NULL)
2074 *resp = rp;
2075
2076 return (AE_OK);
2077}
2078
2079/*
2080 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2081 *
2082 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2083 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2084 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2085 * resources.
2086 */
2087#define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2088
2089ACPI_STATUS
2090acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2091{
2092 ACPI_RESOURCE *rp;
2093 void *newp;
10f97674 2094
5ed44076
MD
2095 /* Initialise the buffer if necessary. */
2096 if (buf->Pointer == NULL) {
2097 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2098 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2099 return (AE_NO_MEMORY);
2100 rp = (ACPI_RESOURCE *)buf->Pointer;
e1eeedd0 2101 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
5ed44076
MD
2102 rp->Length = 0;
2103 }
2104 if (res == NULL)
2105 return (AE_OK);
10f97674 2106
5ed44076
MD
2107 /*
2108 * Scan the current buffer looking for the terminator.
2109 * This will either find the terminator or hit the end
2110 * of the buffer and return an error.
2111 */
2112 rp = (ACPI_RESOURCE *)buf->Pointer;
2113 for (;;) {
2114 /* Range check, don't go outside the buffer */
2115 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2116 return (AE_BAD_PARAMETER);
e1eeedd0 2117 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
5ed44076
MD
2118 break;
2119 rp = ACPI_NEXT_RESOURCE(rp);
2120 }
2121
2122 /*
2123 * Check the size of the buffer and expand if required.
2124 *
2125 * Required size is:
2126 * size of existing resources before terminator +
2127 * size of new resource and header +
2128 * size of terminator.
2129 *
2130 * Note that this loop should really only run once, unless
2131 * for some reason we are stuffing a *really* huge resource.
2132 */
2133 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
e1eeedd0
YT
2134 res->Length + ACPI_RS_SIZE_NO_DATA +
2135 ACPI_RS_SIZE_MIN) >= buf->Length) {
5ed44076
MD
2136 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2137 return (AE_NO_MEMORY);
2138 bcopy(buf->Pointer, newp, buf->Length);
2139 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2140 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2141 AcpiOsFree(buf->Pointer);
2142 buf->Pointer = newp;
2143 buf->Length += buf->Length;
2144 }
5ed44076 2145
10f97674
AP
2146 /* Insert the new resource. */
2147 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2148
2149 /* And add the terminator. */
2150 rp = ACPI_NEXT_RESOURCE(rp);
2151 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2152 rp->Length = 0;
2153
2154 return (AE_OK);
2155}
2156
2157/*
2158 * Set interrupt model.
2159 */
2160ACPI_STATUS
2161acpi_SetIntrModel(int model)
2162{
2163
2164 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2165}
2166
2167/*
2168 * DEPRECATED. This interface has serious deficiencies and will be
2169 * removed.
2170 *
2171 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2172 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2173 */
2174ACPI_STATUS
2175acpi_SetSleepState(struct acpi_softc *sc, int state)
2176{
2177 static int once;
2178
2179 if (!once) {
2180 kprintf(
2181"warning: acpi_SetSleepState() deprecated, need to update your software\n");
2182 once = 1;
2183 }
2184 return (acpi_EnterSleepState(sc, state));
2185}
2186
2187static void
2188acpi_sleep_force(void *arg)
2189{
2190 struct acpi_softc *sc;
2191
2192 kprintf("acpi: suspend request timed out, forcing sleep now\n");
2193 sc = arg;
2194 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2195 kprintf("acpi: force sleep state S%d failed\n", sc->acpi_next_sstate);
2196}
2197
2198/*
2199 * Request that the system enter the given suspend state. All /dev/apm
2200 * devices and devd(8) will be notified. Userland then has a chance to
2201 * save state and acknowledge the request. The system sleeps once all
2202 * acks are in.
2203 */
2204int
2205acpi_ReqSleepState(struct acpi_softc *sc, int state)
2206{
5c7ffd75 2207#ifdef notyet
10f97674 2208 struct apm_clone_data *clone;
5c7ffd75 2209#endif
10f97674
AP
2210
2211 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
2212 return (EINVAL);
2213
2214 /* S5 (soft-off) should be entered directly with no waiting. */
2215 if (state == ACPI_STATE_S5) {
2216 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
2217 return (0);
2218 else
2219 return (ENXIO);
2220 }
2221
2222#if !defined(__i386__)
2223 /* This platform does not support acpi suspend/resume. */
2224 return (EOPNOTSUPP);
2225#endif
2226
2227 /* If a suspend request is already in progress, just return. */
2228 ACPI_LOCK(acpi);
2229 if (sc->acpi_next_sstate != 0) {
2230 ACPI_UNLOCK(acpi);
2231 return (0);
2232 }
2233
2234 /* Record the pending state and notify all apm devices. */
2235 sc->acpi_next_sstate = state;
2236#if 0
2237 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2238 clone->notify_status = APM_EV_NONE;
2239 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
468b4dde 2240 KNOTE(&clone->sel_read.si_note, 0);
10f97674
AP
2241 }
2242 }
2243#endif
2244
2245 /* If devd(8) is not running, immediately enter the sleep state. */
2246 if (devctl_process_running() == FALSE) {
2247 ACPI_UNLOCK(acpi);
2248 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
2249 return (0);
2250 } else {
2251 return (ENXIO);
2252 }
2253 }
2254
2255 /* Now notify devd(8) also. */
2256 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2257
2258 /*
2259 * Set a timeout to fire if userland doesn't ack the suspend request
2260 * in time. This way we still eventually go to sleep if we were
2261 * overheating or running low on battery, even if userland is hung.
2262 * We cancel this timeout once all userland acks are in or the
2263 * suspend request is aborted.
2264 */
2265 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2266 ACPI_UNLOCK(acpi);
2267 return (0);
5ed44076
MD
2268}
2269
2270/*
10f97674
AP
2271 * Acknowledge (or reject) a pending sleep state. The caller has
2272 * prepared for suspend and is now ready for it to proceed. If the
2273 * error argument is non-zero, it indicates suspend should be cancelled
2274 * and gives an errno value describing why. Once all votes are in,
2275 * we suspend the system.
5ed44076 2276 */
10f97674
AP
2277int
2278acpi_AckSleepState(struct apm_clone_data *clone, int error)
5ed44076 2279{
10f97674
AP
2280 struct acpi_softc *sc;
2281 int ret, sleeping;
5ed44076 2282
10f97674
AP
2283#if !defined(__i386__)
2284 /* This platform does not support acpi suspend/resume. */
2285 return (EOPNOTSUPP);
2286#endif
2287
2288 /* If no pending sleep state, return an error. */
2289 ACPI_LOCK(acpi);
2290 sc = clone->acpi_sc;
2291 if (sc->acpi_next_sstate == 0) {
2292 ACPI_UNLOCK(acpi);
2293 return (ENXIO);
2294 }
2295
2296 /* Caller wants to abort suspend process. */
2297 if (error) {
2298 sc->acpi_next_sstate = 0;
2299 callout_stop(&sc->susp_force_to);
2300 kprintf("acpi: listener on %s cancelled the pending suspend\n",
2301 devtoname(clone->cdev));
2302 ACPI_UNLOCK(acpi);
2303 return (0);
2304 }
2305
2306 /*
2307 * Mark this device as acking the suspend request. Then, walk through
2308 * all devices, seeing if they agree yet. We only count devices that
2309 * are writable since read-only devices couldn't ack the request.
2310 */
2311 clone->notify_status = APM_EV_ACKED;
2312 sleeping = TRUE;
2313 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2314 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2315 clone->notify_status != APM_EV_ACKED) {
2316 sleeping = FALSE;
2317 break;
2318 }
2319 }
2320
2321 /* If all devices have voted "yes", we will suspend now. */
2322 if (sleeping)
2323 callout_stop(&sc->susp_force_to);
2324 ACPI_UNLOCK(acpi);
2325 ret = 0;
2326 if (sleeping) {
2327 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2328 ret = ENODEV;
2329 }
2330
2331 return (ret);
2332}
5ed44076
MD
2333
2334static void
2335acpi_sleep_enable(void *arg)
2336{
2337 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
2338}
2339
10f97674
AP
2340enum acpi_sleep_state {
2341 ACPI_SS_NONE,
2342 ACPI_SS_GPE_SET,
2343 ACPI_SS_DEV_SUSPEND,
2344 ACPI_SS_SLP_PREP,
2345 ACPI_SS_SLEPT,
2346};
2347
5ed44076 2348/*
10f97674 2349 * Enter the desired system sleep state.
5ed44076
MD
2350 *
2351 * Currently we support S1-S5 but S4 is only S4BIOS
2352 */
10f97674
AP
2353static ACPI_STATUS
2354acpi_EnterSleepState(struct acpi_softc *sc, int state)
5ed44076 2355{
10f97674 2356 ACPI_STATUS status;
5ed44076
MD
2357 UINT8 TypeA;
2358 UINT8 TypeB;
10f97674 2359 enum acpi_sleep_state slp_state;
5ed44076
MD
2360
2361 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
5ed44076 2362
10f97674
AP
2363 /* Re-entry once we're suspending is not allowed. */
2364 status = AE_OK;
2365 ACPI_LOCK(acpi);
2366 if (sc->acpi_sleep_disabled) {
2367 ACPI_UNLOCK(acpi);
2368 kprintf("acpi: suspend request ignored (not ready yet)\n");
2369 return (AE_ERROR);
2370 }
2371 sc->acpi_sleep_disabled = 1;
2372 ACPI_UNLOCK(acpi);
5ed44076 2373
10f97674
AP
2374 /*
2375 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2376 * drivers need this.
2377 */
2378 //get_mplock();
2379 slp_state = ACPI_SS_NONE;
5ed44076
MD
2380 switch (state) {
2381 case ACPI_STATE_S1:
2382 case ACPI_STATE_S2:
2383 case ACPI_STATE_S3:
2384 case ACPI_STATE_S4:
10f97674 2385 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
5ed44076
MD
2386 if (status == AE_NOT_FOUND) {
2387 device_printf(sc->acpi_dev,
2388 "Sleep state S%d not supported by BIOS\n", state);
2389 break;
2390 } else if (ACPI_FAILURE(status)) {
2391 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
2392 AcpiFormatException(status));
2393 break;
2394 }
2395
2396 sc->acpi_sstate = state;
5ed44076 2397
10f97674
AP
2398 /* Enable any GPEs as appropriate and requested by the user. */
2399 acpi_wake_prep_walk(state);
2400 slp_state = ACPI_SS_GPE_SET;
49e48b8a 2401
10f97674
AP
2402 /*
2403 * Inform all devices that we are going to sleep. If at least one
2404 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2405 *
2406 * XXX Note that a better two-pass approach with a 'veto' pass
2407 * followed by a "real thing" pass would be better, but the current
2408 * bus interface does not provide for this.
2409 */
5ed44076 2410 if (DEVICE_SUSPEND(root_bus) != 0) {
10f97674
AP
2411 device_printf(sc->acpi_dev, "device_suspend failed\n");
2412 break;
5ed44076 2413 }
10f97674
AP
2414 slp_state = ACPI_SS_DEV_SUSPEND;
2415
2416 /* If testing device suspend only, back out of everything here. */
2417 if (acpi_susp_bounce)
2418 break;
5ed44076
MD
2419
2420 status = AcpiEnterSleepStatePrep(state);
2421 if (ACPI_FAILURE(status)) {
2422 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2423 AcpiFormatException(status));
2424 break;
2425 }
10f97674 2426 slp_state = ACPI_SS_SLP_PREP;
5ed44076
MD
2427
2428 if (sc->acpi_sleep_delay > 0)
2429 DELAY(sc->acpi_sleep_delay * 1000000);
2430
2431 if (state != ACPI_STATE_S1) {
2432 acpi_sleep_machdep(sc, state);
10f97674 2433
5ed44076
MD
2434 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2435 if (state == ACPI_STATE_S4)
2436 AcpiEnable();
2437 } else {
10f97674
AP
2438 ACPI_DISABLE_IRQS();
2439 status = AcpiEnterSleepState(state);
5ed44076
MD
2440 if (ACPI_FAILURE(status)) {
2441 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2442 AcpiFormatException(status));
2443 break;
2444 }
2445 }
10f97674 2446 slp_state = ACPI_SS_SLEPT;
5ed44076
MD
2447 break;
2448 case ACPI_STATE_S5:
2449 /*
2450 * Shut down cleanly and power off. This will call us back through the
2451 * shutdown handlers.
2452 */
2453 shutdown_nice(RB_POWEROFF);
2454 break;
2455 case ACPI_STATE_S0:
2456 default:
2457 status = AE_BAD_PARAMETER;
2458 break;
2459 }
2460
10f97674
AP
2461 /*
2462 * Back out state according to how far along we got in the suspend
2463 * process. This handles both the error and success cases.
2464 */
2465 sc->acpi_next_sstate = 0;
2466 if (slp_state >= ACPI_SS_GPE_SET) {
2467 acpi_wake_prep_walk(state);
2468 sc->acpi_sstate = ACPI_STATE_S0;
2469 }
2470 if (slp_state >= ACPI_SS_SLP_PREP)
2471 AcpiLeaveSleepState(state);
2472 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2473 DEVICE_RESUME(root_bus);
2474 if (slp_state >= ACPI_SS_SLEPT)
2475 acpi_enable_fixed_events(sc);
2476
2477 /* Allow another sleep request after a while. */
2478 /* XXX: needs timeout */
2479 if (state != ACPI_STATE_S5)
2480 acpi_sleep_enable(sc);
5ed44076 2481
10f97674
AP
2482 /* Run /etc/rc.resume after we are back. */
2483 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2484
2485 //rel_mplock();
5ed44076
MD
2486 return_ACPI_STATUS (status);
2487}
2488
29b0d8e7 2489/* Enable or disable the device's GPE. */
49e48b8a
MD
2490int
2491acpi_wake_set_enable(device_t dev, int enable)
2492{
2493 struct acpi_prw_data prw;
49e48b8a
MD
2494 ACPI_STATUS status;
2495 int flags;
2496
10f97674
AP
2497 /* Make sure the device supports waking the system and get the GPE. */
2498 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
49e48b8a
MD
2499 return (ENXIO);
2500
10f97674 2501 flags = acpi_get_flags(dev);
49e48b8a 2502 if (enable) {
4efc8147 2503 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
29b0d8e7 2504 ACPI_GPE_ENABLE);
49e48b8a
MD
2505 if (ACPI_FAILURE(status)) {
2506 device_printf(dev, "enable wake failed\n");
2507 return (ENXIO);
2508 }
10f97674 2509 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
49e48b8a 2510 } else {
4efc8147 2511 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
29b0d8e7 2512 ACPI_GPE_DISABLE);
49e48b8a
MD
2513 if (ACPI_FAILURE(status)) {
2514 device_printf(dev, "disable wake failed\n");
2515 return (ENXIO);
2516 }
10f97674 2517 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
49e48b8a
MD
2518 }
2519
2520 return (0);
2521}
2522
10f97674
AP
2523static int
2524acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
49e48b8a
MD
2525{
2526 struct acpi_prw_data prw;
10f97674 2527 device_t dev;
49e48b8a 2528
10f97674 2529 /* Check that this is a wake-capable device and get its GPE. */
49e48b8a
MD
2530 if (acpi_parse_prw(handle, &prw) != 0)
2531 return (ENXIO);
10f97674 2532 dev = acpi_get_device(handle);
49e48b8a
MD
2533
2534 /*
10f97674
AP
2535 * The destination sleep state must be less than (i.e., higher power)
2536 * or equal to the value specified by _PRW. If this GPE cannot be
2537 * enabled for the next sleep state, then disable it. If it can and
2538 * the user requested it be enabled, turn on any required power resources
2539 * and set _PSW.
49e48b8a 2540 */
10f97674 2541 if (sstate > prw.lowest_wake) {
4efc8147 2542 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
49e48b8a 2543 if (bootverbose)
10f97674
AP
2544 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2545 acpi_name(handle), sstate);
2546 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2547 acpi_pwr_wake_enable(handle, 1);
49e48b8a 2548 acpi_SetInteger(handle, "_PSW", 1);
10f97674
AP
2549 if (bootverbose)
2550 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2551 acpi_name(handle), sstate);
49e48b8a
MD
2552 }
2553
49e48b8a
MD
2554 return (0);
2555}
2556
10f97674
AP
2557static int
2558acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
49e48b8a
MD
2559{
2560 struct acpi_prw_data prw;
10f97674 2561 device_t dev;
49e48b8a 2562
10f97674
AP
2563 /*
2564 * Check that this is a wake-capable device and get its GPE. Return
2565 * now if the user didn't enable this device for wake.
2566 */
49e48b8a
MD
2567 if (acpi_parse_prw(handle, &prw) != 0)
2568 return (ENXIO);
10f97674
AP
2569 dev = acpi_get_device(handle);
2570 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2571 return (0);
49e48b8a
MD
2572
2573 /*
10f97674
AP
2574 * If this GPE couldn't be enabled for the previous sleep state, it was
2575 * disabled before going to sleep so re-enable it. If it was enabled,
2576 * clear _PSW and turn off any power resources it used.
49e48b8a 2577 */
10f97674 2578 if (sstate > prw.lowest_wake) {
4efc8147 2579 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
10f97674
AP
2580 if (bootverbose)
2581 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2582 } else {
2583 acpi_SetInteger(handle, "_PSW", 0);
2584 acpi_pwr_wake_enable(handle, 0);
2585 if (bootverbose)
2586 device_printf(dev, "run_prep cleaned up for %s\n",
2587 acpi_name(handle));
2588 }
2589
49e48b8a
MD
2590 return (0);
2591}
2592
2593static ACPI_STATUS
10f97674 2594acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
49e48b8a 2595{
10f97674 2596 int sstate;
49e48b8a 2597
10f97674
AP
2598 /* If suspending, run the sleep prep function, otherwise wake. */
2599 sstate = *(int *)context;
2600 if (AcpiGbl_SystemAwakeAndRunning)
2601 acpi_wake_sleep_prep(handle, sstate);
2602 else
2603 acpi_wake_run_prep(handle, sstate);
49e48b8a
MD
2604 return (AE_OK);
2605}
2606
10f97674 2607/* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
49e48b8a 2608static int
10f97674 2609acpi_wake_prep_walk(int sstate)
49e48b8a
MD
2610{
2611 ACPI_HANDLE sb_handle;
2612
4efc8147 2613 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) {
b3af5338
SZ
2614 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
2615 acpi_wake_prep, NULL, &sstate, NULL);
4efc8147 2616 }
49e48b8a
MD
2617 return (0);
2618}
2619
2620/* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2621static int
2622acpi_wake_sysctl_walk(device_t dev)
2623{
b955fe7e 2624#ifdef notyet
49e48b8a
MD
2625 int error, i, numdevs;
2626 device_t *devlist;
2627 device_t child;
10f97674 2628 ACPI_STATUS status;
49e48b8a
MD
2629
2630 error = device_get_children(dev, &devlist, &numdevs);
10f97674
AP
2631 if (error != 0 || numdevs == 0) {
2632 if (numdevs == 0)
2633 kfree(devlist, M_TEMP);
49e48b8a 2634 return (error);
10f97674 2635 }
49e48b8a
MD
2636 for (i = 0; i < numdevs; i++) {
2637 child = devlist[i];
10f97674 2638 acpi_wake_sysctl_walk(child);
49e48b8a
MD
2639 if (!device_is_attached(child))
2640 continue;
10f97674
AP
2641 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2642 if (ACPI_SUCCESS(status)) {
49e48b8a
MD
2643 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2644 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2645 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2646 acpi_wake_set_sysctl, "I", "Device set to wake the system");
49e48b8a 2647 }
49e48b8a 2648 }
efda3bd0 2649 kfree(devlist, M_TEMP);
b955fe7e 2650#endif
49e48b8a
MD
2651
2652 return (0);
2653}
2654
b955fe7e 2655#ifdef notyet
49e48b8a
MD
2656/* Enable or disable wake from userland. */
2657static int
2658acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2659{
2660 int enable, error;
2661 device_t dev;
2662
2663 dev = (device_t)arg1;
10f97674 2664 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
49e48b8a
MD
2665
2666 error = sysctl_handle_int(oidp, &enable, 0, req);
2667 if (error != 0 || req->newptr == NULL)
2668 return (error);
2669 if (enable != 0 && enable != 1)
2670 return (EINVAL);
2671
2672 return (acpi_wake_set_enable(dev, enable));
2673}
b955fe7e 2674#endif
49e48b8a
MD
2675
2676/* Parse a device's _PRW into a structure. */
10f97674 2677int
49e48b8a
MD
2678acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2679{
2680 ACPI_STATUS status;
2681 ACPI_BUFFER prw_buffer;
2682 ACPI_OBJECT *res, *res2;
10f97674 2683 int error, i, power_count;
49e48b8a
MD
2684
2685 if (h == NULL || prw == NULL)
2686 return (EINVAL);
2687
2688 /*
2689 * The _PRW object (7.2.9) is only required for devices that have the
2690 * ability to wake the system from a sleeping state.
2691 */
2692 error = EINVAL;
2693 prw_buffer.Pointer = NULL;
2694 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2695 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2696 if (ACPI_FAILURE(status))
2697 return (ENOENT);
2698 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2699 if (res == NULL)
2700 return (ENOENT);
2701 if (!ACPI_PKG_VALID(res, 2))
2702 goto out;
2703
2704 /*
2705 * Element 1 of the _PRW object:
2706 * The lowest power system sleeping state that can be entered while still
2707 * providing wake functionality. The sleeping state being entered must
2708 * be less than (i.e., higher power) or equal to this value.
2709 */
2710 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2711 goto out;
2712
2713 /*
2714 * Element 0 of the _PRW object:
2715 */
2716 switch (res->Package.Elements[0].Type) {
2717 case ACPI_TYPE_INTEGER:
2718 /*
2719 * If the data type of this package element is numeric, then this
2720 * _PRW package element is the bit index in the GPEx_EN, in the
2721 * GPE blocks described in the FADT, of the enable bit that is
2722 * enabled for the wake event.
2723 */
2724 prw->gpe_handle = NULL;
2725 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2726 error = 0;
2727 break;
2728 case ACPI_TYPE_PACKAGE:
2729 /*
2730 * If the data type of this package element is a package, then this
2731 * _PRW package element is itself a package containing two
2732 * elements. The first is an object reference to the GPE Block
2733 * device that contains the GPE that will be triggered by the wake
2734 * event. The second element is numeric and it contains the bit
2735 * index in the GPEx_EN, in the GPE Block referenced by the
2736 * first element in the package, of the enable bit that is enabled for
2737 * the wake event.
2738 *
2739 * For example, if this field is a package then it is of the form:
2740 * Package() {\_SB.PCI0.ISA.GPE, 2}
2741 */
2742 res2 = &res->Package.Elements[0];
2743 if (!ACPI_PKG_VALID(res2, 2))
2744 goto out;
2745 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2746 if (prw->gpe_handle == NULL)
2747 goto out;
2748 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2749 goto out;
2750 error = 0;
2751 break;
2752 default:
2753 goto out;
2754 }
2755
10f97674
AP
2756 /* Elements 2 to N of the _PRW object are power resources. */
2757 power_count = res->Package.Count - 2;
2758 if (power_count > ACPI_PRW_MAX_POWERRES) {
2759 kprintf("ACPI device %s has too many power resources\n", acpi_name(h));
2760 power_count = 0;
2761 }
2762 prw->power_res_count = power_count;
2763 for (i = 0; i < power_count; i++)
2764 prw->power_res[i] = res->Package.Elements[i];
49e48b8a
MD
2765
2766out:
2767 if (prw_buffer.Pointer != NULL)
2768 AcpiOsFree(prw_buffer.Pointer);
2769 return (error);
2770}
2771
5ed44076 2772/*
5ed44076
MD
2773 * ACPI Event Handlers
2774 */
2775
2776/* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2777
2778static void
2779acpi_system_eventhandler_sleep(void *arg, int state)
2780{
10f97674
AP
2781 int ret;
2782
5ed44076
MD
2783 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2784
10f97674
AP
2785 /* Check if button action is disabled. */
2786 if (state == ACPI_S_STATES_MAX + 1)
2787 return;
2788
2789 /* Request that the system prepare to enter the given suspend state. */
2790 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
2791 if (ret != 0)
2792 kprintf("acpi: request to enter state S%d failed (err %d)\n",
2793 state, ret);
2794
5ed44076
MD
2795 return_VOID;
2796}
2797
2798static void
2799acpi_system_eventhandler_wakeup(void *arg, int state)
2800{
5ed44076 2801
10f97674 2802 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
5ed44076 2803
10f97674 2804 /* Currently, nothing to do for wakeup. */
5ed44076
MD
2805
2806 return_VOID;
2807}
2808
2809/*
2810 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2811 */
2812UINT32
2813acpi_event_power_button_sleep(void *context)
2814{
2815 struct acpi_softc *sc = (struct acpi_softc *)context;
2816
2817 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2818
2819 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2820
2821 return_VALUE (ACPI_INTERRUPT_HANDLED);
2822}
2823
2824UINT32
2825acpi_event_power_button_wake(void *context)
2826{
2827 struct acpi_softc *sc = (struct acpi_softc *)context;
2828
2829 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2830
2831 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2832
2833 return_VALUE (ACPI_INTERRUPT_HANDLED);
2834}
2835
2836UINT32
2837acpi_event_sleep_button_sleep(void *context)
2838{
2839 struct acpi_softc *sc = (struct acpi_softc *)context;
2840
2841 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2842
2843 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2844
2845 return_VALUE (ACPI_INTERRUPT_HANDLED);
2846}
2847
2848UINT32
2849acpi_event_sleep_button_wake(void *context)
2850{
2851 struct acpi_softc *sc = (struct acpi_softc *)context;
2852
2853 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2854
2855 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2856
2857 return_VALUE (ACPI_INTERRUPT_HANDLED);
2858}
2859
2860/*
10f97674
AP
2861 * XXX This static buffer is suboptimal. There is no locking so only
2862 * use this for single-threaded callers.
5ed44076 2863 */
5ed44076
MD
2864char *
2865acpi_name(ACPI_HANDLE handle)
2866{
10f97674
AP
2867 ACPI_BUFFER buf;
2868 static char data[256];
5ed44076 2869
10f97674
AP
2870 buf.Length = sizeof(data);
2871 buf.Pointer = data;
5ed44076 2872
10f97674
AP
2873 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
2874 return (data);
2875 return ("(unknown)");
5ed44076
MD
2876}
2877
2878/*
2879 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2880 * parts of the namespace.
2881 */
2882int
2883acpi_avoid(ACPI_HANDLE handle)
2884{
2885 char *cp, *env, *np;
2886 int len;
2887
2888 np = acpi_name(handle);
2889 if (*np == '\\')
2890 np++;
10f97674 2891 if ((env = kgetenv("debug.acpi.avoid")) == NULL)
5ed44076
MD
2892 return (0);
2893
2894 /* Scan the avoid list checking for a match */
2895 cp = env;
2896 for (;;) {
10f97674 2897 while (*cp != 0 && isspace(*cp))
5ed44076
MD
2898 cp++;
2899 if (*cp == 0)
2900 break;
2901 len = 0;
10f97674 2902 while (cp[len] != 0 && !isspace(cp[len]))
5ed44076
MD
2903 len++;
2904 if (!strncmp(cp, np, len)) {
728aa6ee 2905 kfreeenv(env);
5ed44076
MD
2906 return(1);
2907 }
2908 cp += len;
2909 }
728aa6ee 2910 kfreeenv(env);
5ed44076
MD
2911
2912 return (0);
2913}
2914
2915/*
10f97674 2916 * Debugging/bug-avoidance. Disable ACPI subsystem components.
5ed44076
MD
2917 */
2918int
2919acpi_disabled(char *subsys)
2920{
2921 char *cp, *env;
2922 int len;
2923
bc01a404 2924 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
5ed44076 2925 return (0);
f9d8cd12 2926 if (strcmp(env, "all") == 0) {
728aa6ee 2927 kfreeenv(env);
5ed44076
MD
2928 return (1);
2929 }
2930
f9d8cd12 2931 /* Scan the disable list, checking for a match. */
5ed44076
MD
2932 cp = env;
2933 for (;;) {
f9d8cd12 2934 while (*cp != '\0' && isspace(*cp))
5ed44076 2935 cp++;
f9d8cd12 2936 if (*cp == '\0')
5ed44076
MD
2937 break;
2938 len = 0;
f9d8cd12 2939 while (cp[len] != '\0' && !isspace(cp[len]))
5ed44076 2940 len++;
f9d8cd12 2941 if (strncmp(cp, subsys, len) == 0) {
728aa6ee 2942 kfreeenv(env);
5ed44076
MD
2943 return (1);
2944 }
2945 cp += len;
2946 }
728aa6ee 2947 kfreeenv(env);
5ed44076
MD
2948
2949 return (0);
2950}
2951
2952/*
2df6e324
MD
2953 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2954 * components are enabled by default. The ones that are not have to be
2955 * enabled via debug.acpi.enabled.
2956 */
2957int
2958acpi_enabled(char *subsys)
2959{
10f97674
AP
2960 char *cp, *env;
2961 int len;
2df6e324 2962
bc01a404 2963 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
10f97674 2964 return (0);
2df6e324 2965 if (strcmp(env, "all") == 0) {
10f97674
AP
2966 kfreeenv(env);
2967 return (1);
2df6e324
MD
2968 }
2969
2970 /* Scan the enable list, checking for a match. */
2971 cp = env;
2972 for (;;) {
10f97674
AP
2973 while (*cp != '\0' && isspace(*cp))
2974 cp++;
2975 if (*cp == '\0')
2976 break;
2977 len = 0;
2978 while (cp[len] != '\0' && !isspace(cp[len]))
2979 len++;
2980 if (strncmp(cp, subsys, len) == 0) {
2981 kfreeenv(env);
2982 return (1);
2983 }
2984 cp += len;
2df6e324 2985 }
728aa6ee 2986 kfreeenv(env);
2df6e324
MD
2987
2988 return (0);
2989}
2990
2991/*
5ed44076
MD
2992 * Control interface.
2993 *
2994 * We multiplex ioctls for all participating ACPI devices here. Individual
2995 * drivers wanting to be accessible via /dev/acpi should use the
2996 * register/deregister interface to make their handlers visible.
2997 */
2998struct acpi_ioctl_hook
2999{
3000 TAILQ_ENTRY(acpi_ioctl_hook) link;
3001 u_long cmd;
3002 acpi_ioctl_fn fn;
3003 void *arg;
3004};
3005
3006static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3007static int acpi_ioctl_hooks_initted;
3008
5ed44076
MD
3009int
3010acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3011{
3012 struct acpi_ioctl_hook *hp;
3013
10f97674
AP
3014 if ((hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3015 return (ENOMEM);
5ed44076
MD
3016 hp->cmd = cmd;
3017 hp->fn = fn;
3018 hp->arg = arg;
10f97674
AP
3019
3020 ACPI_LOCK(acpi);
5ed44076
MD
3021 if (acpi_ioctl_hooks_initted == 0) {
3022 TAILQ_INIT(&acpi_ioctl_hooks);
3023 acpi_ioctl_hooks_initted = 1;
3024 }
3025 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
10f97674
AP
3026 ACPI_UNLOCK(acpi);
3027
5ed44076
MD
3028 return (0);
3029}
3030
10f97674 3031void
5ed44076
MD
3032acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3033{
3034 struct acpi_ioctl_hook *hp;
3035
10f97674 3036 ACPI_LOCK(acpi);
5ed44076 3037 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
10f97674 3038 if (hp->cmd == cmd && hp->fn == fn)
5ed44076
MD
3039 break;
3040
3041 if (hp != NULL) {
3042 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
efda3bd0 3043 kfree(hp, M_ACPIDEV);
5ed44076 3044 }
10f97674 3045 ACPI_UNLOCK(acpi);
5ed44076
MD
3046}
3047
3048static int
fef8985e 3049acpiopen(struct dev_open_args *ap)
5ed44076
MD
3050{
3051 return (0);
3052}
3053
3054static int
fef8985e 3055acpiclose(struct dev_close_args *ap)
5ed44076
MD
3056{
3057 return (0);
3058}
3059
3060static int
fef8985e 3061acpiioctl(struct dev_ioctl_args *ap)
5ed44076
MD
3062{
3063 struct acpi_softc *sc;
3064 struct acpi_ioctl_hook *hp;
10f97674 3065 int error, state;
5ed44076 3066
10f97674
AP
3067 error = 0;
3068 hp = NULL;
fef8985e 3069 sc = ap->a_head.a_dev->si_drv1;
5ed44076
MD
3070
3071 /*
3072 * Scan the list of registered ioctls, looking for handlers.
3073 */
10f97674
AP
3074 ACPI_LOCK(acpi);
3075 if (acpi_ioctl_hooks_initted)
5ed44076 3076 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
10f97674
AP
3077 if (hp->cmd == ap->a_cmd)
3078 break;
5ed44076 3079 }
10f97674
AP
3080 ACPI_UNLOCK(acpi);
3081 if (hp)
3082 return (hp->fn(ap->a_cmd, ap->a_data, hp->arg));
5ed44076
MD
3083
3084 /*
3085 * Core ioctls are not permitted for non-writable user.
3086 * Currently, other ioctls just fetch information.
3087 * Not changing system behavior.
3088 */
10f97674
AP
3089 if ((ap->a_fflag & FWRITE) == 0)
3090 return (EPERM);
5ed44076
MD
3091
3092 /* Core system ioctls. */
fef8985e 3093 switch (ap->a_cmd) {
10f97674
AP
3094 case ACPIIO_REQSLPSTATE:
3095 state = *(int *)ap->a_data;
3096 if (state != ACPI_STATE_S5)
3097 error = acpi_ReqSleepState(sc, state);
3098 else {
3099 kprintf("power off via acpi ioctl not supported\n");
5ed44076 3100 error = ENXIO;
10f97674 3101 }
5ed44076 3102 break;
10f97674 3103 case ACPIIO_ACKSLPSTATE:
ad32ecf2 3104 error = EOPNOTSUPP;
122df98f 3105#if 0 /* notyet */
10f97674
AP
3106 error = *(int *)ap->a_data;
3107 error = acpi_AckSleepState(sc->acpi_clone, error);
ad32ecf2 3108#endif
5ed44076 3109 break;
10f97674
AP
3110 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3111 error = EINVAL;
fef8985e 3112 state = *(int *)ap->a_data;
10f97674
AP
3113 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
3114 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
3115 error = 0;
5ed44076
MD
3116 break;
3117 default:
10f97674 3118 error = ENXIO;
5ed44076
MD
3119 break;
3120 }
5ed44076
MD
3121 return (error);
3122}
3123
3124static int
3125acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3126{
5ed44076 3127 int error;
10f97674 3128 struct sbuf sb;
5ed44076
MD
3129 UINT8 state, TypeA, TypeB;
3130
10f97674
AP
3131 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3132 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
3133 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
3134 sbuf_printf(&sb, "S%d ", state);
3135 sbuf_trim(&sb);
3136 sbuf_finish(&sb);
3137 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3138 sbuf_delete(&sb);
5ed44076
MD
3139 return (error);
3140}
3141
3142static int
3143acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3144{
3145 char sleep_state[10];
3146 int error;
3147 u_int new_state, old_state;
3148
3149 old_state = *(u_int *)oidp->oid_arg1;
10f97674
AP
3150 if (old_state > ACPI_S_STATES_MAX + 1)
3151 strlcpy(sleep_state, "unknown", sizeof(sleep_state));
3152 else
3153 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
5ed44076
MD
3154 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3155 if (error == 0 && req->newptr != NULL) {
3156 new_state = ACPI_STATE_S0;
10f97674
AP
3157 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
3158 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
5ed44076 3159 break;
5ed44076
MD
3160 if (new_state <= ACPI_S_STATES_MAX + 1) {
3161 if (new_state != old_state)
3162 *(u_int *)oidp->oid_arg1 = new_state;
10f97674 3163 } else
5ed44076 3164 error = EINVAL;
5ed44076
MD
3165 }
3166
3167 return (error);
3168}
3169
3170/* Inform devctl(4) when we receive a Notify. */
3171void
3172acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3173{
3174 char notify_buf[16];
3175 ACPI_BUFFER handle_buf;
3176 ACPI_STATUS status;
3177
3178 if (subsystem == NULL)
3179 return;
3180
3181 handle_buf.Pointer = NULL;
3182 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3183 status = AcpiNsHandleToPathname(h, &handle_buf);
3184 if (ACPI_FAILURE(status))
3185 return;
f8c7a42d 3186 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
5ed44076 3187 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
5ed44076
MD
3188 AcpiOsFree(handle_buf.Pointer);
3189}
3190
3191#ifdef ACPI_DEBUG
3192/*
3193 * Support for parsing debug options from the kernel environment.
3194 *
3195 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3196 * by specifying the names of the bits in the debug.acpi.layer and
3197 * debug.acpi.level environment variables. Bits may be unset by
3198 * prefixing the bit name with !.
3199 */
3200struct debugtag
3201{
3202 char *name;
3203 UINT32 value;
3204};
3205
3206static struct debugtag dbg_layer[] = {
3207 {"ACPI_UTILITIES", ACPI_UTILITIES},
3208 {"ACPI_HARDWARE", ACPI_HARDWARE},
3209 {"ACPI_EVENTS", ACPI_EVENTS},
3210 {"ACPI_TABLES", ACPI_TABLES},
3211 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3212 {"ACPI_PARSER", ACPI_PARSER},
3213 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3214 {"ACPI_EXECUTER", ACPI_EXECUTER},
3215 {"ACPI_RESOURCES", ACPI_RESOURCES},
3216 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3217 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3218 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3219 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3220
5ed44076
MD
3221 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3222 {"ACPI_BATTERY", ACPI_BATTERY},
f9d8cd12 3223 {"ACPI_BUS", ACPI_BUS},
5ed44076 3224 {"ACPI_BUTTON", ACPI_BUTTON},
f9d8cd12
MD
3225 {"ACPI_EC", ACPI_EC},
3226 {"ACPI_FAN", ACPI_FAN},
3227 {"ACPI_POWERRES", ACPI_POWERRES},
5ed44076
MD
3228 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3229 {"ACPI_THERMAL", ACPI_THERMAL},
f9d8cd12 3230 {"ACPI_TIMER", ACPI_TIMER},
5ed44076
MD
3231 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3232 {NULL, 0}
3233};
3234
3235static struct debugtag dbg_level[] = {
5ed44076
MD
3236 {"ACPI_LV_INIT", ACPI_LV_INIT},
3237 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3238 {"ACPI_LV_INFO", ACPI_LV_INFO},
3239 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3240
3241 /* Trace verbosity level 1 [Standard Trace Level] */
3242 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3243 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3244 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3245 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3246 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3247 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3248 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3249 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3250 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3251 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3252 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3253 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3254 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3255 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3256 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3257
3258 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3259 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3260 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3261 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3262 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3263 {"ACPI_LV_ALL", ACPI_LV_ALL},
3264
3265 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3266 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3267 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3268 {"ACPI_LV_IO", ACPI_LV_IO},
3269 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3270 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3271
3272 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3273 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3274 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3275 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3276 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3277 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3278 {NULL, 0}
3279};
3280
3281static void
3282acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3283{
3284 char *ep;
3285 int i, l;
3286 int set;
3287
3288 while (*cp) {
3289 if (isspace(*cp)) {
3290 cp++;
3291 continue;
3292 }
3293 ep = cp;
3294 while (*ep && !isspace(*ep))
3295 ep++;
3296 if (*cp == '!') {
3297 set = 0;
3298 cp++;
3299 if (cp == ep)
3300 continue;
3301 } else {
3302 set = 1;
3303 }
3304 l = ep - cp;
3305 for (i = 0; tag[i].name != NULL; i++) {
3306 if (!strncmp(cp, tag[i].name, l)) {
3307 if (set)
3308 *flag |= tag[i].value;
3309 else
3310 *flag &= ~tag[i].value;
5ed44076
MD
3311 }
3312 }
3313 cp = ep;
3314 }
3315}
3316
3317static void
3318acpi_set_debugging(void *junk)
3319{
10f97674 3320 char *layer, *level;
5ed44076
MD
3321
3322 if (cold) {
3323 AcpiDbgLayer = 0;
3324 AcpiDbgLevel = 0;
3325 }
3326
bc01a404
MD
3327 layer = kgetenv("debug.acpi.layer");
3328 level = kgetenv("debug.acpi.level");
f9d8cd12
MD
3329 if (layer == NULL && level == NULL)
3330 return;
5ed44076 3331
e3869ec7 3332 kprintf("ACPI set debug");
f9d8cd12
MD
3333 if (layer != NULL) {
3334 if (strcmp("NONE", layer) != 0)
e3869ec7 3335 kprintf(" layer '%s'", layer);
f9d8cd12 3336 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
728aa6ee 3337 kfreeenv(layer);
f9d8cd12
MD
3338 }
3339 if (level != NULL) {
3340 if (strcmp("NONE", level) != 0)
e3869ec7 3341 kprintf(" level '%s'", level);
f9d8cd12 3342 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
728aa6ee 3343 kfreeenv(level);
5ed44076 3344 }
e3869ec7 3345 kprintf("\n");
5ed44076 3346}
10f97674
AP
3347
3348SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3349 NULL);
5ed44076
MD
3350
3351static int
3352acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3353{
3354 int error, *dbg;
3355 struct debugtag *tag;
3356 struct sbuf sb;
3357
3358 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3359 return (ENOMEM);
3360 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3361 tag = &dbg_layer[0];
3362 dbg = &AcpiDbgLayer;
3363 } else {
3364 tag = &dbg_level[0];
3365 dbg = &AcpiDbgLevel;
3366 }
3367
3368 /* Get old values if this is a get request. */
10f97674 3369 ACPI_SERIAL_BEGIN(acpi);
5ed44076
MD
3370 if (*dbg == 0) {
3371 sbuf_cpy(&sb, "NONE");
3372 } else if (req->newptr == NULL) {
3373 for (; tag->name != NULL; tag++) {
3374 if ((*dbg & tag->value) == tag->value)
3375 sbuf_printf(&sb, "%s ", tag->name);
3376 }
3377 }
3378 sbuf_trim(&sb);
3379 sbuf_finish(&sb);
3380
f9d8cd12
MD
3381 /* Copy out the old values to the user. */
3382 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
5ed44076
MD
3383 sbuf_delete(&sb);
3384
3385 /* If the user is setting a string, parse it. */
3386 if (error == 0 && req->newptr != NULL) {
3387 *dbg = 0;
2382383b 3388 ksetenv((char *)oidp->oid_arg1, (char *)req->newptr);
5ed44076
MD
3389 acpi_set_debugging(NULL);
3390 }
10f97674 3391 ACPI_SERIAL_END(acpi);
5ed44076
MD
3392
3393 return (error);
3394}
10f97674 3395
5ed44076
MD
3396SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3397 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3398SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3399 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
10f97674 3400#endif /* ACPI_DEBUG */
5ed44076
MD
3401
3402static int
3403acpi_pm_func(u_long cmd, void *arg, ...)
3404{
3405 int state, acpi_state;
3406 int error;
3407 struct acpi_softc *sc;
3408 va_list ap;
3409
3410 error = 0;
3411 switch (cmd) {
3412 case POWER_CMD_SUSPEND:
3413 sc = (struct acpi_softc *)arg;
3414 if (sc == NULL) {
3415 error = EINVAL;
3416 goto out;
3417 }
3418
3419 va_start(ap, arg);
3420 state = va_arg(ap, int);
10f97674 3421 va_end(ap);
5ed44076
MD
3422
3423 switch (state) {
3424 case POWER_SLEEP_STATE_STANDBY:
3425 acpi_state = sc->acpi_standby_sx;
3426 break;
3427 case POWER_SLEEP_STATE_SUSPEND:
3428 acpi_state = sc->acpi_suspend_sx;
3429 break;
3430 case POWER_SLEEP_STATE_HIBERNATE:
3431 acpi_state = ACPI_STATE_S4;
3432 break;
3433 default:
3434 error = EINVAL;
3435 goto out;
3436 }
3437
10f97674
AP
3438 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3439 error = ENXIO;
5ed44076
MD
3440 break;
3441 default:
3442 error = EINVAL;
3443 goto out;
3444 }
3445
3446out:
3447 return (error);
3448}
3449
3450static void
3451acpi_pm_register(void *arg)
3452{
3453 if (!cold || resource_disabled("acpi", 0))
3454 return;
3455
3456 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3457}
3458
ba39e2e0 3459SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0);